Graduate Students
Pyeongkang Hur
Pyeongkang Hur
허평강
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Position
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M.S.-Ph.D. 4th year (석박통합 4년차) |
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E-mail
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pkhur@postech.ac.kr |
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Phone
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Research Interest
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Electronic Devices based on Emerging Oxide/Quantum Materials |
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Achievement
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1) Y. Seo+, Y. Park+, P. Hur, M. Jo, J. Heo, B. J. Choi, J. Son*, “Promotion of Probabilistic Bit Generation in Mott Devices by Embedded Metal Nanoparticles”, Adv. Mater. 36, 2402490 (2024)
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Sungwon Lee
Sungwon Lee
이성원
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Position
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Ph.D.-course 1st year (박사과정 1년차) |
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E-mail
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swlee21@snu.ac.kr |
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Phone
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Research Interest
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Materials Discovery and Defect Control of Emerging Oxide Materials with Phase Transition |
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Achievement
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1) D. K. Lee, S. Lee, H. Sim, Y. Park, S.-Y. Choi, J. Son*, “Piezo strain–controlled phase transition in single-crystalline Mott switches for threshold-manipulated leaky integrate-and-fire”, Science Adv. 10, eadk8836 (2024)
2) J. W. Lim, D. H. Choo, J. H. Cho, J. Kim, W. S. Cho, O. F. N. Okello, K. Kim, S. Lee, J. Son, S.-Y. Choi, J. K. Kim, H. W. Jang, S. Y. Kim, J.-L. Lee*, “A MOF-derived pyrrolic N-stabilized Ni single atom catalyst for selective electrochemical reduction of CO2 to CO at high current density”, J. Mater. Chem. A 11, 11090 (2024)
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Ye-Won Seo
Ye-Won Seo
서예원
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Position
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Ph.D.-course 1st year (박사과정 1년차) |
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E-mail
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yewonseo@snu.ac.kr |
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Phone
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Research Interest
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Electronic Devices based on Emerging Oxide/Quantum Materials |
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Achievement
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1) Y. Seo+, Y. Park+, P. Hur, M. Jo, J. Heo, B. J. Choi, J. Son*, “Promotion of Probabilistic Bit Generation in Mott Devices by Embedded Metal Nanoparticles”, Adv. Mater. 36, 2402490 (2024)
2) M. Jo, Y.-W. Seo, H. Yoon, Y.-S. Nam, S.-Y. Choi, B. J. Choi, J. Son*, “Embedded metallic nanoparticles facilitate metastability of switchable metallic domains in Mott threshold switches”, Nature Commun. 13, 4609 (2022)
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Utaek Cho
Utaek Cho
조우택
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Position
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Ph.D.-course 1st year (박사과정 1년차) |
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E-mail
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utaekcho@snu.ac.kr |
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Phone
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Research Interest
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Electronic Devices based on Emerging Oxide/Quantum Materials |
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Achievement
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Minwook Yoon
Minwook Yoon
윤민욱
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Position
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Ph.D.-course 1st year (박사과정 1년차) |
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E-mail
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minukyoon@snu.ac.kr |
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Phone
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Research Interest
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Materials Discovery and Defect Control of Emerging Oxide Materials with Phase Transition |
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Achievement
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Sooyoung Park
Sooyoung Park
박수영
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Position
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Ph.D.-course 1st year (박사과정 1년차) |
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E-mail
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suyoung.park@snu.ac.kr |
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Phone
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Research Interest
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Materials Discovery and Defect Control of Emerging Oxide Materials with High Electron Mobility |
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Achievement
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Minho Lee
Minho Lee
이민호
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Position
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M.S.-Ph.D. 1st year (석박통합 1년차) |
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E-mail
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dlalssgh@snu.ac.kr |
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Phone
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Research Interest
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Electronic Devices based on Emerging Oxide/Quantum Materials |
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Achievement
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Jimin Chae
Jimin Chae
채지민
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Position
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M.S.-Ph.D. 1st year (석박통합 1년차) |
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E-mail
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chaejm711@snu.ac.kr |
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Phone
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Research Interest
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Electronic Devices based on Emerging Oxide/Quantum Materials |
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Achievement
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Researcher/Staff
Yujeong Lee
Yujeong Lee
이유정
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Position
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Postdoctoral Researcher (박사후 연구원) |
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E-mail
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yjlee6818@snu.ac.kr |
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Phone
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Research Interest
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Materials Discovery and Defect Control of Emerging Oxide Materials with High Electron Mobility. |
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Achievement
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1) Y. Lee+, D. Yoon+, Y.-S. Nam+, S. Yu, C. Lim, H. Sim, Y. Park, J. W. Han*, S.-Y. Choi*, J. Son*, “Accelerating metal nanoparticle exsolution by exploiting tolerance factor of perovskite stannate” Mater. Horiz. 11, 3835 (2024)
2) D. Yoon+, Y. Lee+, Y. Kang, J. Son*, “Perovskite Stannate Heterojunctions for Self‐Powered Ultraviolet Photodiodes Operated in Extreme Environments” Adv. Electron. Mater. 10, 2300530 (2024)
3) Y. Lee+, D. Yoon+, S. Yu, Y. Park, H. Sim, Y.-S. Nam, K.-J. Kim, S.-Y. Choi, Y. Kang, J. Son*, “Reversible manipulation of photoconductivity caused by surface oxygen vacancies in perovskite stannates with ultraviolet light” Adv. Mater. 34, 2107650 (2022)
4) D. Yoon, Y. Lee, G.-Y. Kim, Y. Kang, S.-Y. Choi, J. Son*, “Harnessing selective exsolution of Sn metal to enhance electrical conductivity in oxygen-deficient perovskite stannates” Adv. Funct. Mater., 31, 2105086 (2021)
5) D. Yoon, S. Yu, Y. Lee, Y. Park, J. Son*, “Simultaneous reduction of multi-dimensional defects in Sn-excess BaSnO₃ epitaxial films induced by surface chemical reconstruction” Phys. Rev. Mater. 5, 014602 (2021)
6) S. Yu+, D. Yoon+, Y. Lee, H. Yoon, H. Han, N. Kim, C.-J. Kim, K. Ihm, T.-S. Oh and J. Son*, “Metal nanoparticle exsolution on perovskite stannate support with high electrical conductivity” Nano Lett. 20, 3538-3544 (2020)
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Seohyun Lee
Seohyun Lee
이서현
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Position
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Administrative Assistant |
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E-mail
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seohyun2@snu.ac.kr |
Visiting/Undergraduate
Alumni
Dong kyu Lee
Dong kyu Lee
이동규
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Degree
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Ph.D. (2024) |
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E-mail
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dongkyulee@snu.ac.kr |
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Thesis
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Heterogeneous integration of single-crystalline rutile oxide nanomembrane |
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Current Position
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Postdoctoral Researcher at University of Minnesota |
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Achievement
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1) D. K. Lee, S. Lee, H. Sim, Y. Park, S.-Y. Choi, J. Son*, “Piezo strain–controlled phase transition in single-crystalline Mott switches for threshold-manipulated leaky integrate-and-fire” Science Adv. 10, eadk8836 (2024)
1) D. K. Lee+, Y. Park+, H. Sim+, J. Park, Y. Kim, G.-Y. Kim, C.-B. Eom, S.-Y. Choi*, J. Son*, “Heterogeneous integration of single-crystalline rutile nanomembranes with steep phase transition on silicon substrates” Nature Commun. 12, 5019 (2021)
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Daseob Yoon
Daseob Yoon
윤다섭
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Degree
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Ph.D. (2022) |
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E-mail
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daseob@pknu.ac.kr |
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Thesis
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Defect engineering of wide bandgap high mobility perovskite oxide BaSnO3 thin film for optoelectronic performance enhancement |
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Current Position
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Assistant Professor at Pukyong National University |
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Achievement
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1) Y. Lee+, D. Yoon+, S. Yu, Y. Park, H. Sim, Y.-S. Nam, K.-J. Kim, S.-Y. Choi, Y. Kang, J. Son*, “Reversible manipulation of photoconductivity caused by surface oxygen vacancies in perovskite stannates with ultraviolet light” Adv. Mater. 34, 2107650 (2022)
2) D. Yoon, Y. Lee, G.-Y. Kim, Y. Kang, S.-Y. Choi, J. Son*, “Harnessing selective exsolution of Sn metal to enhance electrical conductivity in oxygen-deficient perovskite stannates” Adv. Funct. Mater. 31, 2105086 (2021)
3) D. Yoon, S. Yu, Y. Lee, Y. Park, J. Son*, “Simultaneous reduction of multi-dimensional defects in Sn-excess BaSnO3 epitaxial films induced by surface chemical reconstruction” Phys. Rev. Mater. 2, 014602 (2021)
4) S. Yu+, D. Yoon+, Y. Lee, H. Yoon, H. Han, N. Kim, C.-J. Kim, K. Ihm, T.-S. Oh and J. Son*, “Metal nanoparticle exsolution on perovskite stannate support with high electrical conductivity” Nano Lett. 20, 3538-3544 (2020)
5) Y. Park, H. Sim, M. Jo, G-Y. Kim, D. Yoon, H. Han, Y. Kim, K. Song, D. Lee, S.-Y. Choi and J. Son*, “Directional ionic transport across the oxide interface enables low-temperature epitaxy of rutile TiO2” Nature Commun. 11, 1401 (2020)
6) Y. Park, D. Yoon, K. Fukutani, R. Stania, J. Son*, “Steep-slope threshold switch enabled by pulsed-laser-induced phase transformation” ACS Appl. Mater. Interfaces 11, 24221-24229 (2019)
7) K. Kim+, H. Han+, T. Defferriere, D. Yoon, S. Na, S. J. Kim, A. M. Dayaghi, J. Son, T.-S. Oh, H. M. Jang*, G. M. Choi*, “Facet-dependent in-situ growth of nanoparticles in epitaxial thin films: The role of interfacial energy”, J. Am. Chem. Soc. 141, 7509-7517 (2019)
8) D. Yoon+, S. Yu+, J. Son*, “Oxygen vacancy-assisted recovery process for increasing electron mobility in n-type BaSnO₃ epitaxial thin films”, NPG Asia Mater. 10, 363-371 (2018)
9) Y. Kim, S. Yu, J. Park, D. Yoon, A.M. Dayaghi, K.J. Kim, J.S. Ahn, J. Son*, “High-throughput roll-to-roll fabrication of flexible thermochromic coatings for smart windows with VO₂ nanoparticles”, J. Mater. Chem. C, 6, 3451-3458 (2018)
10) S. Heo+, D. Yoon+, S. Yu, J. Son*, H.M. Jang*, “Non-volatile ferroelectric control of room-temperature electrical transport in perovskite oxide semiconductor La:BaSnO₃”, J. Mater. Chem. C 5, 11763-11768 (2017)
11) S. Yu, D. Yoon, J. Son* “Enhancing electron mobility in La-doped BaSnO₃ thin films by thermal strain to annihilate extended defects”, Appl. Phys. Lett. 108, 262101 (2016)
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Young Kwang Kim
Young Kwang Kim
김영광
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Degree
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Ph.D. (2022) |
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E-mail
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ykkim3210@postech.ac.kr |
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Thesis
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Improved Synthetic Process by Nano-amorphization of Oxide Nanoparticles for Thermochromic Energy Applications |
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Current Position
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Senior Researcher at Samsung Electronics |
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Achievement
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1) J. Kim+, Y. Kim+, O. F. N. Okello, S. Moon, J. Kim, S.-Y. Choi, J. Son*, J. K. Kim*, “Structural evolution of hexagonal boron nitride powder by Bead-milling”, Mater. Lett., 300, 130118 (2021)
2) Y. Kim, S. Yu, J. Park, D. Yoon, A.M. Dayaghi, K.J. Kim, J.S. Ahn, J. Son*, “High-throughput roll-to-roll fabrication of flexible thermochromic coatings for smart windows with VO₂ nanoparticles”, J. Mater. Chem. C, 6, 3451-3458
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Minguk Jo
Minguk Jo
조민국
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Degree
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Ph.D. (2022) |
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E-mail
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minguk@postech.ac.kr |
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Thesis
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Devices using metal-insulator transition in vanadium oxides for electrical and biosensor applications |
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Current Position
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POSTECH |
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Achievement
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1) M. Jo, Y.-W. Seo, H. Yoon, Y.-S. Nam, S.-Y. Choi, B. J. Choi, J. Son*, “Embedded metallic nanoparticles facilitate metastability of switchable metallic domains in Mott threshold switches”, Nature Commun. (Accepted)
2) Y. Park, H. Sim, M. Jo, G-Y. Kim, D. Yoon, H. Han, Y. Kim, K. Song, D. Lee, S.-Y. Choi and J. Son*, “Directional ionic transport across the oxide interface enables low-temperature epitaxy of rutile TiO₂” Nature Commun. 11, 1401 (2020)
3) C. Oh, M. Jo, J. Son*, “All-Solid-State Synaptic Transistor with High-Temperature Stability Using Proton Pump Gating of Strongly Correlated Materials”, ACS. Appl. Mater. Interfaces 11, 15733-15740 (2019)
4) M. Jo+, H.J. Lee+, C. Oh, H. Yoon, J.Y. Jo*, J. Son*, “Gate-induced massive and reversible phase transition of VO₂ channel using solid-state proton electrolytes”, Adv. Funct. Mater. 28, 1802003 (2018)
5) S. Lee, O. Kwon, M. Jeon, J. Song, S. Shin, H. M. Kim, M. Jo, T. Rim, J. Doh, S. Kim, J. Son, Y. Kim*, C. Kim*, “Super-resolution visible photo-activated atomic force microscopy”, Light: Sci. Appl. 6, e17080 (2017)
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Yunkyu Park
Yunkyu Park
박윤규
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Degree
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Ph.D. (2021) |
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E-mail
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ykpark0065@postech.ac.kr |
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Thesis
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Low-temperature synthesis of epitaxial oxide thin films enabled by defect control |
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Current Position
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Assistant Professor at Hankuk University of Foreign Studies |
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Achievement
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1) M. S. Nikoo, R. Soleimanzadeh, A. Krammer, G. Marega, Y. Park, J. Son, A. Schueler, A. Kis, P. Moll, E. Matioli*, “Electrical control of glass-like dynamics in vanadium dioxide for data storage and processing” Nature Electronics (Accepted)
2) Y. Lee+, D. Yoon+, S. Yu, Y. Park, H. Sim, Y.-S. Nam, K.-J. Kim, S.-Y. Choi, Y. Kang, J. Son*, “Reversible manipulation of photoconductivity caused by surface oxygen vacancies in perovskite stannates with ultraviolet light” Adv. Mater. 34, 2107650 (2022)
3) D. K. Lee+, Y. Park+, H. Sim+, J. Park, Y. Kim, G.-Y. Kim, C.-B. Eom, S.-Y. Choi*, J. Son*, “Heterogeneous integration of single-crystalline rutile nanomembranes with steep phase transition on silicon substrates” Nature Commun. 12, 5019 (2021)
4) D. Yoon, S. Yu, Y. Lee, Y. Park, J. Son*, “Simultaneous reduction of multi-dimensional defects in Sn-excess BaSnO₃ epitaxial films induced by surface chemical reconstruction” Phys. Rev. Mater. 5, 014602 (2021)
5) C. Oh, I. Kim, J. Park, Y. Park, M. Choi*, J. Son*, “Deep proton insertion assisted oxygen vacancies for long-term memory in VO2 synaptic transistor” Adv. Electron. Mater. 7,200802 (2021)
6) N. Park+, Y. T. Kim+, Y. Park+, J. Y. Cho, S. S. Oh, J. Heo*, J. Son*, “Voltage-triggered insulator-to-metal transition of ALD NbOₓ thin films for two-terminal threshold switch” J. Mater. Chem. C, 8, 14365-14369 (2020)
7) Y. Park, H. Sim, M. Jo, G-Y. Kim, D. Yoon, H. Han, Y. Kim, K. Song, D. Lee, S.-Y. Choi and J. Son*, “Directional ionic transport across the oxide interface enables low-temperature epitaxy of rutile TiO₂” Nature Commun. 11, 1401 (2020)
8) Y. Park, D. Yoon, K. Fukutani, R. Stania, J. Son*, “Steep-slope threshold switch enabled by pulsed-laser-induced phase transformation” ACS Appl. Mater. Interfaces 11, 24221-24229 (2019)
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Jinheon Park
Jinheon Park
박진헌
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Degree
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M.S.(2022) |
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E-mail
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jinheon@postech.ac.kr |
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Thesis
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Epitaxial Growth of Perovskite Transparent Oxide Thin Films |
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Achievement
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1) D. K. Lee+, Y. Park+, H. Sim+, J. Park, Y. Kim, G.-Y. Kim, C.-B. Eom, S.-Y. Choi*, J. Son*, “Heterogeneous integration of single-crystalline rutile nanomembranes with steep phase transition on silicon substrates” Nature Commun. 12, 5019 (2021)
2) S.-M. Jung, S.-W. Run, J.-H. Kim, S.-H. You, J. Park, S. Lee, S. H. Chang, S. C. Chae, S. H. Joo, Y. Jung, J. Lee, J. Son, J. Snyder, V. Stamenkovic, N. M. Markovic, Y.-T. Kim*, “Selective electrocatalysis imparted by metal-insulator transition for durability enhancement of automotive fuel cells” Nature Catal. 3, 639-648 (2020)
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Yong Hoe Ahn
Yong Hoe Ahn
안용회
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Degree
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M.S. (2021) |
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E-mail
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yonghoe@postech.ac.kr |
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Thesis
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Study on IGZO laser annealing |
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Current Position
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Researcher at Samsung Electronics |
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Achievement
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Sangbae Yu
Sangbae Yu
유상배
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Degree
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Ph.D. (2020) |
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E-mail
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sangbae@postech.ac.kr |
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Thesis
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Study on redistribution of defect in barium stannate thin films by thermal treatment for enhancing properties |
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Current Position
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Senior Researcher at Samsung Electronics |
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Achievement
|
1) Y. Lee+, D. Yoon+, Y.-S. Nam+, S. Yu, C. Lim, H. Sim, Y. Park, J. W. Han*, S.-Y. Choi*, J. Son*, “Accelerating metal nanoparticle exsolution by exploiting tolerance factor of perovskite stannate” Mater. Horiz. 11, 3835 (2024)
2) Y. Lee+, D. Yoon+, S. Yu, Y. Park, H. Sim, Y.-S. Nam, K.-J. Kim, S.-Y. Choi, Y. Kang, J. Son*, “Reversible manipulation of photoconductivity caused by surface oxygen vacancies in perovskite stannates with ultraviolet light” Adv. Mater. 34, 2107650 (2022)
3) D. Yoon, S. Yu, Y. Lee, Y. Park, J. Son*, “Simultaneous reduction of multi-dimensional defects in Sn-excess BaSnO₃ epitaxial films induced by surface chemical reconstruction” Phys. Rev. Mater. 5, 014602 (2021)
4) S. Yu+, D. Yoon+, Y. Lee, H. Yoon, H. Han, N. Kim, C.-J. Kim, K. Ihm, T.-S. Oh and J. Son*, “Metal nanoparticle exsolution on perovskite stannate support with high electrical conductivity” Nano Lett. 20, 3538-3544 (2020)
5) D. Yoon+, S. Yu+, J. Son*, “Oxygen vacancy-assisted recovery process for increasing electron mobility in n-type BaSnO₃ epitaxial thin films”, NPG Asia Mater. 10, 363-371 (2018)
6) Y. Kim, S. Yu, J. Park, D. Yoon, A.M. Dayaghi, K.J. Kim, J.S. Ahn, J. Son*, “High-throughput roll-to-roll fabrication of flexible thermochromic coatings for smart windows with VO₂ nanoparticles”, J. Mater. Chem. C, 6, 3451-3458 (2018)
7) S. Heo+, D. Yoon+, S. Yu, J. Son*, H.M. Jang*, “Non-volatile ferroelectric control of room-temperature electrical transport in perovskite oxide semiconductor La:BaSnO₃”, J. Mater. Chem. C 5, 11763-11768 (2017)
8) S. Yu, D. Yoon, J. Son* “Enhancing electron mobility in La-doped BaSnO3 thin films by thermal strain to annihilate extended defects”, Appl. Phys. Lett. 108, 262101 (2016)
9) M. Kang, S. Yu, J. Son*, “Voltage-induced insulator-to-metal transition of hydrogen-treated NbO2 thin films”,J. Phys. D: Appl. Phys. 48, 095301 (2015)
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Jaeseoung Park
Jaeseoung Park
박재성
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Degree
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Ph.D. (2020) |
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E-mail
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wotjd0415@postech.ac.kr |
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Thesis
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Kinetic control of synthesis and electrical transport by accelerated ionic motion in oxide |
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Current Position
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Senior Researcher at Electronics and Telecommunications Research Institute (ETRI) |
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Achievement
|
1) J. Park, C. Oh, J. Son*, “Anisotropic ionic transport-controlled synaptic weight update by protonation in VO2 transistor” J. Mater. Chem. C 9, 2521 (2021)
2) C. Oh, I. Kim, J. Park, Y. Park, M. Choi*, J. Son*, “Deep proton insertion assisted oxygen vacancies for long-term memory in VO₂ synaptic transistor” Adv. Electron. Mater. 7, 200802 (2021)
3) J. Park, H. Yoon, H. Sim, S.-Y. Choi and J. Son*, “Accelerated hydrogen diffusion and surface exchange by domain boundaries in epitaxial VO₂ thin films” ACS Nano 14, 2533-2541 (2020)
4) J. Park, G-Y. Kim, K. Song, S-Y. Choi*, J. Son*, “Self-assembly of correlated (Ti, V)O₂ superlattices with tunable lamella period by kinetically-enhanced spinodal decomposition”, NPG Asia Mater. 11, 32 (2019)
5) J. Park, H. Yoon, S-Y. Choi*, J. Son*, “Nanoscaffold WO₃ by kinetically Controlled Polymorphism”, Cryst. Growth. Des. 19, 479-486 (2019)
6) H. Yoon, J. Park, S.-Y. Choi, D. Lee, J. Son*, “Facet-dependent phase control by band filling and anisotropic electron-lattice coupling in HVO₂ epitaxial films”, Adv. Electron. Mater. 4, 1800128 (2018)
7) Y. Kim, S. Yu, J. Park, D. Yoon, A.M. Dayaghi, K.J. Kim, J.S. Ahn, J. Son*, “High-throughput roll-to-roll fabrication of flexible thermochromic coatings for smart windows with VO₂ nanoparticles”, J. Mater. Chem. C, 6, 3451-3458 (2018)
8) A. Khare, J. Lee, J. Park, G.Y. Kim, S.Y. Choi, T. Katase, S. Roh, T.S. Yoo, J. Hwang, H. Ohta , J. Son , and W. S. Choi*, “Directing Oxygen Vacancy Channels in SrFeO₂.₅ Epitaxial Thin Films”, ACS Appl. Mater. Interfaces, 10, 4831–4837 (2018)
|
Chadol Oh
Chadol Oh
오차돌
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Degree
|
Ph.D. (2020) |
|
E-mail
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dhckehf09@postech.ac.kr |
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Thesis
|
Voltage-controlled electro-chemical devices exploiting proton doping in correlated oxide |
|
Current Position
|
Senior Researcher at Samsung Electronics |
|
Achievement
|
1) J. Park, C. Oh, J. Son*, “Anisotropic ionic transport-controlled synaptic weight update by protonation in VO2 transistor” J. Mater. Chem. C 9, 2521 (2021)
2) C. Oh, I. Kim, J. Park, Y. Park, M. Choi*, J. Son*, “Deep proton insertion assisted oxygen vacancies for long-term memory in VO₂ synaptic transistor” Adv. Electron. Mater. 7, 200802 (2021)
3) J. Bak, H. B. Bae, C. Oh, J. Son*, S.-Y. Chung*, “Effect of Lattice Strain on the Formation of Ruddlesden-Popper Faults in Heteroepitaxial LaNiO₃ for Oxygen Evolution Electrocatalysis” J. Phys. Chem. Lett. 11, 7253-7260 (2020)
4) D. Seol, S. Kim, C. Oh, S.-Y. Heo, W.-S. Jang, H. Y. Jeong, Y.-M. Kim, J. Son, Y. Kim*, “Flexoelectric healing of intrinsically more conductive nanochannels in NdNiO₃ thin films” Appl. Surf. Sci. 497, 143727 (2019)
5) C. Oh, M. Jo, J. Son*, “All-Solid-State Synaptic Transistor with High-Temperature Stability Using Proton Pump Gating of Strongly Correlated Materials”, ACS. Appl. Mater. Interfaces 11, 15733-15740 (2019)
6) M. Jo+, H.J. Lee+, C. Oh, H. Yoon, J.Y. Jo*, J. Son*, “Gate-induced massive and reversible phase transition of VO₂ channel using solid-state proton electrolytes”, Adv. Funct. Mater. 28, 1802003 (2018)
7) G. Y. Song+, C. Oh+, S. Sinha, J. Son*, J. Heo*, “Facile phase control of multi-valent vanadium oxide thin films (V₂O₅ and VO₂) by atomic layer deposition and post-deposition annealing”, ACS Appl. Mater. Interfaces, 9, 23909 (2017)
8) S. Heo, C. Oh, J. Son*, H. M. Jang, “Influence of tensile-strain-induced oxygen deficiency on metal-insulator transitions in NdNiO₃_δ epitaxial thin films”, Sci. Rep. 7, 4681 (2017)
9) S. Heo, C. Oh, M. J. Eom, J. S. Kim, J. Ryu, J. Son*, H. M. Jang* “Modulation of metal-insulator transition by field-controlled strain in NdNiO₃/SrTiO₃/PMN-PT (001) heterostructures”, Sci. Rep. 6, 22228 (2016)
10) C. Oh, S. Heo, H. M. Jang, J. Son* “Correlated memory resistor in epitaxial NdNiO₃ heterostructures with asymmetrical proton concentration”, Appl. Phys. Lett. 108, 122016 (2016)
|
Narae Park
Narae Park
박나래
|
Degree
|
M.S. (2020) |
|
E-mail
|
nrpark@postech.ac.kr |
|
Current Position
|
Researcher at Samsung Electronics |
|
Achievement
|
1) N. Park+, Y. T. Kim+, Y. Park+, J. Y. Cho, S. S. Oh, J. Heo*, J. Son*, “Voltage-triggered insulator-to-metal transition of ALD NbOₓ thin films for two-terminal threshold switch” J. Mater. Chem. C, 8, 14365-14369 (2020)
|
Hyojin Yoon
Hyojin Yoon
윤효진
|
Degree
|
Ph.D. (2019) |
|
E-mail
|
hyojin@postech.ac.kr |
|
Thesis
|
Hydrogen-induced band-filling-control of multivalent VO2 epitaxial thin films |
|
Current Position
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Postdoctoral Researcher at University of Minnesota, United States |
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Achievement
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1) M. Jo, Y.-W. Seo, H. Yoon, Y.-S. Nam, S.-Y. Choi, B. J. Choi, J. Son*, “Embedded metallic nanoparticles facilitate metastability of switchable metallic domains in Mott threshold switches”, Nature Commun. (Accepted)
2) S.-J. Kim, I. Kim, S. Choi, H. Yoon, C. Kim, Y. Lee, C. Choi, J. Son, Y. W. Lee, J. Rho, B. Lee*, “Reconfigurable all-dielectric Fano metasurfaces for strong full-space intensity modulation of visible light” Nanoscale Horiz. 5, 1088-1095 (2020)
3) S. Yu+, D. Yoon+, Y. Lee, H. Yoon, H. Han, N. Kim, C.-J. Kim, K. Ihm, T.-S. Oh and J. Son*, “Metal nanoparticle exsolution on perovskite stannate support with high electrical conductivity” Nano Lett. 20, 3538-3544 (2020)
4) J. Park, H. Yoon, H. Sim, S.-Y. Choi and J. Son*, “Accelerated hydrogen diffusion and surface exchange by domain boundaries in epitaxial VO₂ thin films” ACS Nano 14, 2533-2541 (2020)
5) H. Yoon, Y. Kim, E. J. Crumlin, D. Lee, K. Ihm*, J. Son*, “Direct probing of oxygen loss from the surface lattice of correlated oxides during hydrogen spillover” J. Phys. Chem. Lett. 10, 7285-7292 (2019)
6) J. Park, H. Yoon, S-Y. Choi*, J. Son*, “Nanoscaffold WO₃ by kinetically Controlled Polymorphism”, Cryst. Growth. Des. 19, 479-486 (2019)
7) M. Jo+, H.J. Lee+, C. Oh, H. Yoon, J.Y. Jo*, J. Son*, “Gate-induced massive and reversible phase transition of VO₂ channel using solid-state proton electrolytes”, Adv. Funct. Mater. 28, 1802003 (2018)
8) H. Yoon, J. Park, S.-Y. Choi, D. Lee, J. Son*, “Facet-dependent phase control by band filling and anisotropic electron-lattice coupling in HVO₂ epitaxial films”, Adv. Electron. Mater. 4, 1800128 (2018)
9) H. Yoon+, M. Choi+, T.-W. Lim, H. Kwon, K. Ihm, J.-K. Kim, S.-Y. Choi, J. Son* “Reversible phase modulation and hydrogen storage in multivalent VO₂ epitaxial thin films”, Nature Mater. 15, 1113 (2016)
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Hyeon Han
Hyeon Han
한현
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Degree
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Post. Doc. (2018) |
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E-mail
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poshan@postech.ac.kr |
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Current Position
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Assistant Professor at POSTECH, South Korea |
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Achievement
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1) S. Yu+, D. Yoon+, Y. Lee, H. Yoon, H. Han, N. Kim, C.-J. Kim, K. Ihm, T.-S. Oh and J. Son*, “Metal nanoparticle exsolution on perovskite stannate support with high electrical conductivity” Nano Lett. 20, 3538-3544 (2020)
2) Y. Park, H. Sim, M. Jo, G-Y. Kim, D. Yoon, H. Han, Y. Kim, K. Song, D. Lee, S.-Y. Choi and J. Son*, “Directional ionic transport across the oxide interface enables low-temperature epitaxy of rutile TiO₂” Nature Commun. 11, 1401 (2020)
3) K. Kim+, H. Han+, T. Defferriere, D. Yoon, S. Na, S. J. Kim, A. M. Dayaghi, J. Son, T.-S. Oh, H. M. Jang*, G. M. Choi*, “Facet-dependent in-situ growth of nanoparticles in epitaxial thin films: The role of interfacial energy”, J. Am. Chem. Soc. 141, 7509-7517 (2019)
4) H. Han, D. Kim, S. Chae, J. Park, S. Y. Nam, M. Choi, K. Yong, H. J. Kim, J. Son*, H. M. Jang*, “Switchable Ferroelectric Photovoltaic Effects in Epitaxial h-RFeO₃ Thin Films”, Nanoscale 10, 13261 (2018)
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Minkook Kang
Minkook Kang
강민국
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Degree
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Ph.D. (2017) |
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E-mail
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kmkazure@postech.ac.kr |
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Thesis
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A study on the optimization of metal-insulator transition in NbO2 thin films for selector device |
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Current Position
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Senior Research Engineer at Hynix Semiconductor |
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Achievement
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1) M. Kang, J. Son* “Off-state current reduction in NbO₂-based selector device by using TiO₂ tunneling barrier as an oxygen scavenger”, Appl. Phys. Lett. 109, 202101 (2016)
2) M. Kang, S. Yu, J. Son*, “Voltage-induced insulator-to-metal transition of hydrogen-treated NbO₂ thin films”,J. Phys. D: Appl. Phys. 48, 095301 (2015)
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Seungyang Heo
Seungyang Heo
허승양
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Degree
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Ph.D. (2017) |
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E-mail
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rountino@postech.ac.kr |
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Thesis
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Electric-Field-Induced Band Control of Perovskite Oxide Epitaxial Thin Films using Piezoelectric PMN-PT Substrate: NdNiO3 and La:BaSnO3 |
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Current Position
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Senior Researcher at Samsung Electronics |
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Achievement
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1) S. Heo+, D. Yoon+, S. Yu, J. Son*, H.M. Jang*, “Non-volatile ferroelectric control of room-temperature electrical transport in perovskite oxide semiconductor La:BaSnO₃”, J. Mater. Chem. C 5, 11763-11768 (2017)
2) S. Heo, C. Oh, J. Son*, H. M. Jang, “Influence of tensile-strain-induced oxygen deficiency on metal-insulator transitions in NdNiO₃_δ epitaxial thin films”, Sci. Rep. 7, 4681 (2017)
3) S. Heo, C. Oh, M. J. Eom, J. S. Kim, J. Ryu, J. Son*, H. M. Jang* “Modulation of metal-insulator transition by field-controlled strain in NdNiO₃/SrTiO₃/PMN-PT (001) heterostructures”, Sci. Rep. 6, 22228 (2016)
4) C. Oh, S. Heo, H. M. Jang, J. Son* “Correlated memory resistor in epitaxial NdNiO₃ heterostructures with asymmetrical proton concentration”, Appl. Phys. Lett. 108, 122016 (2016)
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