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제125회 대한화학회 학술발표회 및 총회 Enhancement of photoelectrochemical property with Fe2O3 electrodeposition on electrochemical modified FTO

등록일
2020년 2월 13일 10시 55분 26초
접수번호
1483
발표코드
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발표시간
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발표형식
포스터
발표분야
Environmental Energy
저자 및
공동저자
Jaewon Lee, Kiyoung Lee1,*
School of Nano & Materials Science and Engineerin, Kyungpook National University, Korea
1School of Nano & Materials Science and Engineering, Kyungpook National University, Korea
As serious problem of environmental pollution caused by coal and fuel, necessity of developing renewable energy is emerged. Due to such influences, numerous strategies are on-going to research for producing clean energy. Especially, photo-electrochemistry is the one of the hot issue for generation of renewable energy. For photo-electrochemical(PEC) performance, various of materials have been researched for water-splitting. For instance, Fe2O3, WO3, TiO2 and BiVO4 etc. are mainly used for photo-electrochemistry. Among them, Fe2O3 has merits of moderate band-gap (2.2 eV), abundant resources, eco-friendly energy and high stability in aqueous solution (pH>3). However, Hematite has two obstacles, short diffusion length (~2–4 nm) and short lifetime of charge carriers (<10 ps). In order to overcome matters, we electrochemically modified fluorine tin oxide (FTO) to produce rough surfaces in acid condition. Iron-based layer was deposited using pulse reverse electrodeposition (PRED) on the modified FTO. Therefore, it can achieve higher photocurrent and electrodeposition of hematite photo-anode can higher conductivity of modified substrate.

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