Unassisted photoelectrochemical water splitting exceeding 7% solar-to-hydrogen conversion efficiency using photon recycling
- Authors
- Shi, Xinjian; Jeong, Hokyeong; Oh, Seung Jae; Ma, Ming; Zhang, Kan; Kwon, Jeong; Choi, In Taek; Choi, Il Yong; Kim, Hwan Kyu; Kim, Jong Kyu; Park, Jong Hyeok
- Issue Date
- 6월-2016
- Publisher
- NATURE PUBLISHING GROUP
- Citation
- NATURE COMMUNICATIONS, v.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- NATURE COMMUNICATIONS
- Volume
- 7
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/88544
- DOI
- 10.1038/ncomms11943
- ISSN
- 2041-1723
- Abstract
- Various tandem cell configurations have been reported for highly efficient and spontaneous hydrogen production from photoelectrochemical solar water splitting. However, there is a contradiction between two main requirements of a front photoelectrode in a tandem cell configuration, namely, high transparency and high photocurrent density. Here we demonstrate a simple yet highly effective method to overcome this contradiction by incorporating a hybrid conductive distributed Bragg reflector on the back side of the transparent conducting substrate for the front photoelectrochemical electrode, which functions as both an optical filter and a conductive counter-electrode of the rear dye-sensitized solar cell. The hybrid conductive distributed Bragg reflectors were designed to be transparent to the long-wavelength part of the incident solar spectrum (lambda>500 nm) for the rear solar cell, while reflecting the short-wavelength photons (lambda<500 nm) which can then be absorbed by the front photoelectrochemical electrode for enhanced photocurrent generation.
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- Appears in
Collections - Graduate School > Department of Advanced Materials Chemistry > 1. Journal Articles
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