Optoelectronic Nanomaterials Engineering Laboratory

광전자나노소재 연구실

관련기사 바로가기
광전자나노소재 연구실

“Establishing the function of organic semiconductors as promising materials for solar-to-fuel energy conversion.”
Direct conversion of solar energy into solar fuels as a form of chemical energy at molecular level by photoelectrodes is a promising approach to reduce our dependence on fossil fuels and enable long-term energy storage, given the stability and transportability of chemical fuels. Of the possible approaches, using semiconductor materials to convert solar energy into electrochemical potential capable of driving water electrolysis has intrinsic thermodynamic advantages. However, the identification of ideal light harvesting semiconductors and systems that can achieve high solar-to-fuel energy conversion efficiency and robustness in an economically feasible manner still remains a main challenge.
Organic semiconductors (OSs) are exceptional components to meet these requirements, considering their unique features to be engineered at the molecular level and solution-processed at low temperature. Optoelectronic Nanomaterials Engineering Laboratory (ONEL) is directed to designing novel organic semiconductors and establishing their roles as promising materials for various solar fuel productions. More importantly, the ONEL employs an all-in-one concept incorporating material design, preparation, characterization, and demonstration of diverse platforms for solar-driven energy conversion in a single lab. By leveraging this, the ONEL carries out autonomous and systematic research with the aim of demonstrating next-generation OS-photoelectrodes and OS-photocatalysts for efficient and long-lasting production of solar fuels.

Major research field

Synthesis of organic semiconductors, conjugated polymers, interfacial engineering, organic/inorganic junction, polymer processing

Desired field of research

Organic photoelectrodes, Tandem devices, Organic photocatalysts, Solar fuels, Artificial photosynthesis

Research Publications

•Nat. Catal. 2021, 4, 431−438, “A Semiconducting Polymer Bulk Heterojunction Photoanode for Solar Water Oxidation”, Han-Hee Cho, L. Yao, J.-H. Yum, Y. Liu, F. Boudoire, R. A. Wells, N. Guijarro, A. Sekar, and K. Sivula*
•Adv. Energy Mater. 2018, 8, 1701436, “Design of Cyanovinylene-Containing Polymer Acceptors with Large Dipole Moment Change for Efficient Charge Generation in High-Performance All-Polymer Solar Cells”, Han-Hee Cho, S. Kim, T. Kim, V. G. Sree, S.-H. Jin, F. S. Kim, and Bumjoon J. Kim*
•Energy Environ. Sci. 2021, 14, 3141−3151, “A hybrid bulk-heterojunction photoanode for direct solar-to-chemical conversion”, L. Yao†, Y. Liu†, Han-Hee Cho, M. Xia, A. Sekar, B. P. Darwich, R. A. Wells, J.-H. Yum, D. Ren, M. Grätzel, N. Guijarro, K. Sivula*


•신규한 나프탈렌다이이미드 기반 중합체 및 이를 포함하는 유기전자소자 (Novel naphthalene diimide based polymers and organic electronic device); 김범준, 조한희; 등록특허 10-1978556, 2019.05.08
•전자 도너-억셉터가 교차 반복 도입되는 공액 고분자, 이를 이용한 유기 광전자소자 및 유기 태양전지 (Conjugated polymer having electron donor and acceptor alternately, organic photoelectric device and organic solar cell comprising the same); 김범준, 조한희; 등록특허 10-1387065, 2014.04.14


  • EB. 재료
  • EB03. 고분자재료
  • EB0307. 에너지/환경산업용 소재기술


  • 환경/에너지 프론티어 진흥
  • 031300. 에너지 소재기술


  • 에너지원기술
  • 수소/연료전지
  • 243. 수소제조 및 수소저장 기타 기술


  • NT 분야
  • 나노소재
  • 030211. 나노소재기술 (나노분말소재, 광학용 나노소재, 고기능 시너지 소재, 촉매/환경/기능소재에 중점)