Unassisted photoelectrochemical water splitting beyond 5.7% solar-to-hydrogen conversion efficiency by a wireless monolithic photoanode/dye-sensitised solar cell tandem device
- Authors
- Shi, Xinjian; Zhang, Kan; Shin, Kahee; Ma, Ming; Kwon, Jeong; Choi, In Taek; Kim, Jung Kyu; Kim, Hwan Kyu; Wang, Dong Hwan; Park, Jong Hyeok
- Issue Date
- 4월-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Embedded structure; Dye-sensitised solar cell; Tandem cell; Transparency; Solar-to-hydrogen efficiency
- Citation
- NANO ENERGY, v.13, pp.182 - 191
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANO ENERGY
- Volume
- 13
- Start Page
- 182
- End Page
- 191
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/93908
- DOI
- 10.1016/j.nanoen.2015.02.018
- ISSN
- 2211-2855
- Abstract
- Achieving the spontaneous evolution of hydrogen from photoelectrochemical (PEC) cells in water using solar light is a desirable but difficult goal. Here, we report a highly efficient wireless monolithic tandem device composed of bipolar highly transparent BiVarsensitised mesoporous WO3 films/ Pt and a porphyrin-dye-based photoelectrode achieving 5.7% without any external bias. A sandwich infiltration process was used to produce a thin BiVO4 layer coated onto mesoporous WO3 films while preserving high transparency, enabling high photonic flux into the second dye-sensitised photoanode. In addition, the porphyrin -dye-sensitised photoanode with a cobalt electrolyte generated sufficient bias, realising highly efficient unassisted solar water splitting in the tandem cells. By combining the highly transparent BiVO4-sensitised mesoporous WO3 films with the state-of-the-art water oxidation catalyst and a single dye-sensitised solar cell with a high open circuit potential in a monolithic tandem configuration, an extraordinarily high solar-to-hydrogen (5TH) conversion efficiency with spontaneous hydrogen evolution was obtained. (C) 2015 Elsevier Ltd. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.