화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO))
권호 25권 1호
발표분야 포스터-에너지저장·변환
제목 Electrochemically Controlled Dual Core-Shell Heterostructure of CdS@CdSe Nanoparticles on ITO@TiO2 Nanowire with Tailored Cascade Charge Migration for Enhanced Photoelectrochemical  Hydrogen Production
초록 Here, we report a novel dual heterostructured photoanode consisted of CdS@CdSe core-shell nanoparticles and 1D-structured tin-doped indium oxide (ITO)@TiO2 core-shell nanowires for highly efficient photoelectrochemical hydrogen production. The finely controlled hierarchical CdS@CdSe sensitization from a consecutive electrochemical deposition on the ITO@TiO2 nanowire induces cascade charge migration throughout the aligned energy band edges with the rapid charge extraction through the hierarchical heterostructure of ITO@TiO2@CdS@CdSe, alleviating the crucial charge accumulation. As a result, the dual heterostructured photoanode exhibits up to maximum photocurrent density of 20.11 mA/cm2 at 1.23 V vs RHE and the dramatic enhancement in incident photon-to-current efficiency over extended absorption spectrum.
저자 조윤준, 김광희, 박종혁
소속 연세대
키워드 dual heterostructure; core-shell; cascade charge transport; hydrogen production
E-Mail lutts@yonsei.ac.kr