에너지시스템학과

-Visiting Scholar (09/2021 ~08/2022), Sabbatical year
Sungkyunkwan University (SKKU, Suwon)

-Invited Professor (08/2017 ~ )
Samsung Institute of Technology (SSIT): Lecture for Introduction of Materials Science 1 & 2

-Postdoctoral Research Fellow (11/2011 ~ 02/2015)
[in English] Max Planck Institute for Bio-physical chemistry (Department of Dynamics at Surfaces) &
Georg August University of Goettingen (Institute for Physical Chemistry), Germany
*Research Areas: Synthesis of complex surfaces for molecular beam scattering experiments (Advisor: Prof. Alec M. Wodtke).

-Postdoctoral Research Fellow (09/2010 ~ 10/2011)
Pohang University of Science and Technology (POSTECH), Dept. of Materials Science and Engineering
*Research Areas: Fabrication of large area nano-structures and applications to optoelectronic devices (Advisor: Prof. Jong-Lam Lee).

-Editorial Committee  of Korean Journal of Metals and Materials
-대한금속재료학회 회원 & 융합분과 간사위원 (2015.03 ~ )
-대한금속재료학회지 편집위원 (2021.01~)
-한국재료학회 학술 분과 이사 (2019.01~2022.12.31)
-반도체 학술대회 P분과 (Device for energy) 공동 위원장 (2018.09~2021.02)
-한국세라믹학회 회원
-한국센서학회 회원
-GPVC (Global Photovoltaic Conference) 분과위원 (2017.03)
-제3기 국가나노기술지도 나노소재분과 분과위원 (2017.09~2018.02)
-한국산업기술진흥협회 NEP, NET 심사위원 (2015.05 ~ )
-산업기술혁신 평가단 평가위원 (2017.03 ~ )
-중소기업기술개발 지원사업 평가위원 (2017.08 ~ ) 
-SBDC 중소기업유통센터 공공 구매제도 평가위원 (2020.03 ~ )
-국방기술품질원 국방과학기술 평가위원 (2021.02 ~ )
-경기테크토파크(TP) 지원사업 전문인력 (2021.02 ~ )

1. Rational synthesis of nano-materials
-Graphene growth and applications
Growth of high quality graphene layer using CVD method and transfer process.
Making free-standing graphehe using TEM grid patterns.
Application of free-standing graphene for low energy electron scattering.
Application of free-standing graphene for He scattering and molecular beam scattering.
Application of free-standing graphene for bio-molecule imaging using Cryo-TEM.
-Large-area nano facet (MgO), nanorods & wires (MgO, ZnO, ITO, and In2O3)
Application to GaN-based high-power vertical-structure light emitting diodes (V-LEDs) &
Alq3 based organic light emitting diodes (OLEDs) for solid-state lightings.
Piezo-electronic devices such as haptic devices and energy harvesting devices.
Super-hydrophobic surfaces for self-cleaning devices.
-Nanomaterials for advanced catalysts and sensors (VO2, RuO2, SnO2, MoO2, WO2, TiO2, and ReO3)
Growth mechanism analysis of nanorods (VLS & non-VLS process).
Metal oxide nanowire with carbon complex for Li ion battery anode applications.
Mott-transition of VO2 in nano-structure and their application as sensors.
2. Epitaxial growth of close packed metal (Ag, Cu, Pt, Au etc) and oxide materials (MgO, TiN, ZnO etc) and their characterization
Domain matching epitaxy for the large lattice mismatch systems.
Buffer layers of functional oxide such as ferroelectrics and wurtzite semiconductors.
3. Solar cell electrode design for high efficiency
ITO nano-branches for high efficient organic solar cells (P3HT:PCBM solar cells).
MgO facet design for the Yablonovitch limit (a-Si and Si based solar cells).
Graphene as a flexible electrode of organic solar cells.
Surface plasmon for the advanced light absorption.
Design of distributed Bragg reflector (DBR) for total light absorption.
4. MgO based secondary electron emitters and Thermal energy storage systemn
Control of preferred orientation of polycrystalline MgO film.
Defect level control using excimer laser annealing.
Application to plasma display panels, electron multipliers, and mass spectrometers.