Director

EDUCATION

Ph.D., School of Materials Science and Engineering, Seoul National University, Seoul, Korea, Mar. 1997 - Aug. 2001.

M.S., School of Materials Science and Engineering, Seoul National University, Seoul, Korea, Mar. 1995 - Feb. 1997.

B.S., Department of Metallurgical Engineering, Seoul National University, Seoul, Korea, Mar. 1991. - Feb. 1995.

CAREERS

1. 2004 – Present, Korea Institute of Science and Technology (KIST), Seoul, Korea

• 2018 – 2024, Head (센터장)

-      Advanced Photovoltaics Research Center (2020 – 2024)

-      Photoelectronic Hybrids Research Center (2018 – 2020)

• 2010 – Present, Principal Research Scientist (책임연구원)

-     Advanced Photovoltaics Research Center

(The center was formerly the Photoelectronic Hybrids Research Center and the Solar Cell Research Center)

• 2004 – 2010, Senior Research Scientist (선임연구원)

-      Thin Film Materials Research Center

2. 2024 – Present, Council Member, Korea Photovoltaic Society (KPVS), Korea

3. 2017 – 2021, Professor, Division of Nano & Information Technology, KIST school, University of Science and Technology (UST), Seoul, Korea

4. 2013 – 2015, Professor at Green School, Korea University, Seoul, Korea

5. 2003 – 2004, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA

• Postdoctoral Associate, Department of Mechanical Engineering

6. 2001 – 2002, Seoul National University, Seoul, Korea

• Postdoctoral Associate, School of Materials Science and Engineering

RESEARCH INTERESTS

1. Cu(In,Ga)Se2 thin-film solar cell (Current research interest)

-      Vacuum processes of CIGS thin film and earth-abundant thin film materials (Cu2ZnSn(S,Se)4 etc.)

-      Solar cell fabrication process

-      Technology for CIGS solar cell on flexible substrates

-      Bifacial CIGS solar cell 

-      Ultrafast Laser Process for Lithography and Material Engineering

-      Understanding of device physics of CIGS PV devices

2. Memory applications of phase change materials (Chalcogenide glass)

-      Low power controlled chalcogenide phase change material

-      Device design for high efficient joule heating and low thermal dissipation

3. Mechanical characterization of submicron-scale materials for thin film products, microelectronics and MEMS

-      Measurement of micro-mechanical properties: residual stress, interfacial adhesion, elastic stiffness, plasticity, fracture, fatigue properties, etc

-      Techniques development for evaluation: electrostatic-actuator based measurement, Nanoindentation-based measurement, ultra-low force loading test, etc

-      Modeling of mechanical behavior: analytical and numerical modeling (FEA)

TEACHING EXPERIENCE

1. Professor at Division of Nano & Information Technology, KIST school, University of Science and Technology, March 2017 to 2021

2. Lecturer in the course of “Micromechanical Testing” at the training program for reliability analysis sponsored by Korea Ministry of Commerce, Industry and Energy, December 2001 to August 2002

3. Invited Lecturer in the course of “Special Problems on Materials Reliability” at School of Materials Science and Engineering of Seoul National University, Spring Semester 2002.

4. Part-time Lecturer in the course of “Introduction to Materials Science and Engineering” at School of Materials Science and Engineering of Seoul National University, Spring Semester 2002.

5. Teaching Assistant of course “Introduction to Mechanics of Materials” at School of Materials Science and Engineering of Seoul National University, Fall Semester 2000 and Spring Semester 2001.

ACADEMIC HONORS

1. GPVC 2019 Best Poster Presentation Award by Korea Photovoltaic Society, 2019. 3.

The paper was selected as the best Poster Presentation in the field of II-VI & Chalcogenide Compound based Cells and Materials for its outstanding contribution to the progress in photovoltaic science and engineering. 

2. KIST best research project award, 2018. 12.

This is awarded yearly to the projects that achieved outstanding progresses within KIST

3. ICAE 2017 Best Poster Award, 2017. 11.

4. GPVC 2017 Best Poster Presentation Award by Korea Photovoltaic Society, 2017. 3.

The paper was selected as the best Poster Presentation in the field of II-VI & Chalcogenide Compound based Cells and Materials for its outstanding contribution to the progress in photovoltaic science and engineering.

5. Ministerial Citation, Minister of Science, ICT and Future Planning [a certificate of commendation], 2016. 1.

6. Award for outstanding poster presentation by Korea Photovoltaic Society, 2015. 4.

This honor is awarded to the year’s best Poster Presentation by the Society.

7. Award for outstanding poster presentation by the Korean Vacuum Society, 2015. 1.

This honor is awarded to the year’s best Poster Presentation by the Society.

8. Awarded the Best Poster Presentation by Korea Photovoltaic Society, 2013. 4.

This honor is awarded to the year’s best Poster Presentation by the institute.

9. Awarded the best paper honor by the Korean Institute of Metals and Materials, Korea, 2001. 4.

This honor is awarded to the year’s best paper by the institute.

10. The most outstanding undergraduate student award of Seoul National University, Korea, 1995.

This honor is awarded to the undergraduate student, who achieves the most superior academic performance in his/her department, by the president of Seoul National University.

11. Scholarship for Outstanding Academic Students, Seoul National University, one year in 1994.

This scholarship is awarded to the best-qualified undergraduate student of his/her department by the president of Seoul National University.