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 (>500 nm) for the rear solar cell, while reflecting the short-wavelength photons ( <500 nm) which can then be absorbed by the front photoelectrochemical electrode for enhanced photocurrent generation.
| Original language | English |
|---|---|
| Article number | 11943 |
| Journal | Nature communications |
| Volume | 7 |
| DOIs | |
| Publication status | Published - 2016 Jun 21 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Physics and Astronomy(all)
Cite this
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Unassisted photoelectrochemical water splitting exceeding 7% solar-to-hydrogen conversion efficiency using photon recycling. / 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.
In: Nature communications, Vol. 7, 11943, 21.06.2016.Research output: Contribution to journal › Article
TY - JOUR
T1 - Unassisted photoelectrochemical water splitting exceeding 7% solar-to-hydrogen conversion efficiency using photon recycling
AU - Shi, Xinjian
AU - Jeong, Hokyeong
AU - Oh, Seung Jae
AU - Ma, Ming
AU - Zhang, Kan
AU - Kwon, Jeong
AU - Choi, In Taek
AU - Choi, Il Yong
AU - Kim, Hwan Kyu
AU - Kim, Jong Kyu
AU - Park, Jong Hyeok
PY - 2016/6/21
Y1 - 2016/6/21
N2 - 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 (>500 nm) for the rear solar cell, while reflecting the short-wavelength photons ( <500 nm) which can then be absorbed by the front photoelectrochemical electrode for enhanced photocurrent generation.
AB - 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 (>500 nm) for the rear solar cell, while reflecting the short-wavelength photons ( <500 nm) which can then be absorbed by the front photoelectrochemical electrode for enhanced photocurrent generation.
UR - http://www.scopus.com/inward/record.url?scp=84975818912&partnerID=8YFLogxK
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U2 - 10.1038/ncomms11943
DO - 10.1038/ncomms11943
M3 - Article
AN - SCOPUS:84975818912
VL - 7
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
M1 - 11943
ER -