1. Master Course Student, Graduate School of Energy Science and Technology, Chungnam National University
2. Postdoctoral Researcher, Energy Conversion and Storage Materials Laboratory, Korea Institute of Energy Research
3. Principal Researcher, Energy Conversion and Storage Materials Laboratory, Korea Institute of Energy Research
4. Principal Researcher, Photovoltaic Laboratory, Korea Institute of Energy Research
5. Professor, Graduate School of Energy Science and Technology, Chungnam National University