Education

2004 POSTECH: Ph.D. in Materials Science and Engineering

2001 POSTECH: M.S. in Materials Science and Engineering

1999 POSTECH: B.S. in Materials Science and Engineering

Career

2021-present Full Professor, Seoul National University

2012-2021 Associate/Assistant Professor, Seoul National University

2009-2012 Senior Research Scientist, Korea Institute of Science and Technology

2006-2009 Postdoctoral Research Associate, University of Wisconsin-Madison

2004-2005 Postdoctoral Fellow, POSTECH

Awards

2023 Seoul National University Academic Research and Education Award, Seoul National University

2023 Academic Contribution Award, Korean Ceramic Society fall meeting

2021 250 best papers, science technology 2021

2021 EN06 Award, 2020 Virtual MRS Spring/Fall Meeting & Exhibit 

2017 Electronic Information Material Award, Korean Institute of Metals and Materials

2017 Best Paper Reward, Korean Institute of Hazardous Materials

2016 Sinyang Engineering Academy Award, Seoul National University

2014 Young Ceramist Award, Korean Ceramic Society

2012 Best Research Team of the Year, Korea Institute of Science and Technology

2011 Best Research Team of the Year, Korea Institute of Science and Technology

2010 Best Paper Award, Korean Sensors Society Meeting

2010 Outstanding Poster Award, MRS Spring Meeting

2004 Best Paper Award, 10th Korean Conference on Semiconductors

2003 Graduate Student Award, MRS Fall Meeting

Research interests

     • Wafer-scale synthesis of oxide thin film nanostructures using physical vapor deposition and wet solution process

     • Synthesis of 2-dimensional materials including graphene and transition metal disulfides

     • Heteroepitaxy of complex oxide thin films by atomic layer control

     • Chemical sensors for electronic nose and electronic tongue

     • Photoelectrodes and electrodes for water splitting and CO₂ reduction

     • Mott insulators for nanoelectronics and smart window

     • Localized Surface Plasmon Resonance for optoelectronics

     • Low power consumption resistive switching and memristive materials

Selected publications

• "Organolead Halide Perovskites for Low Operating Voltage Multilevel Resistive Switching", Adv. Mater. 28, 6562 (2016)

• "Wafer-scale transferable molybdenum disulfide thin-film catalyst for photoelectrochemical hydrogen production", Energy Environ. Sci. 9, 2240 (2016)

• "Self-Activated Transparent All Graphene Gas Sensor with Endurance to Humidity and Mechanical Bending”, ACS Nano 9, 10453-10460 (2015) 

• “Metallic and Insulating Oxide Interfaces Controlled by Electronic Correlations”, Science 331, 886 (2011)

• “Ferroelectricity in Strain-Free SrTiO3 Thin Films”, Phys. Rev. Lett. 104, 197601 (2010)

• “Domain engineering for enhanced ferroelectric properties of epitaxial (001) BiFeO thin films”, Adv. Mater. 21, 817 (2009)

• "Strain-induced polarization rotation in epitaxial (001) BiFeO3 thin films", Phys. Rev. Lett. 101, 107602 (2008)

• “Mechanism for ohmic contact formation of Ni/Ag contacts on p-type GaN”, Appl. Phys. Lett. 85, 5920 (2004)

• “Characterization of band bendings on Ga-face and N-face GaN films grown by metalorganic chemical vapor deposition", Appl. Phys. Lett. 80, 3955 (2002)