Han, Lihao and Abdi, Fatwa F. and van de Krol, Roel and Liu, Rui and Huang, Zhuangqun and Lewerenz, Hans-Joachim and Dam, Bernard and Zeman, Miro and Smets, Arno H. M. (2014) Efficient Water-Splitting Device Based on a Bismuth Vanadate Photoanode and Thin-Film Silicon Solar Cells. ChemSusChem, 7 (10). pp. 2832-2838. ISSN 1864-5631. doi:10.1002/cssc.201402456. https://resolver.caltech.edu/CaltechAUTHORS:20140825-111015375
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Abstract
A hybrid photovoltaic/photoelectrochemical (PV/PEC) water-splitting device with a benchmark solar-to-hydrogen conversion efficiency of 5.2 % under simulated air mass (AM) 1.5 illumination is reported. This cell consists of a gradient-doped tungsten–bismuth vanadate (W:BiVO_4) photoanode and a thin-film silicon solar cell. The improvement with respect to an earlier cell that also used gradient-doped W:BiVO4 has been achieved by simultaneously introducing a textured substrate to enhance light trapping in the BiVO4 photoanode and further optimization of the W gradient doping profile in the photoanode. Various PV cells have been studied in combination with this BiVO_4 photoanode, such as an amorphous silicon (a-Si:H) single junction, an a-Si:H/a-Si:H double junction, and an a-Si:H/nanocrystalline silicon (nc-Si:H) micromorph junction. The highest conversion efficiency, which is also the record efficiency for metal oxide based water-splitting devices, is reached for a tandem system consisting of the optimized W:BiVO_4 photoanode and the micromorph (a-Si:H/nc-Si:H) cell. This record efficiency is attributed to the increased performance of the BiVO_4 photoanode, which is the limiting factor in this hybrid PEC/PV device, as well as better spectral matching between BiVO_4 and the nc-Si:H cell.
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Additional Information: | © 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: May 23, 2014; Revised: June 19, 2014. Financial support from the VIDI project of A.H.M.S. granted by the NWO-STW and European Commission’s Framework Project 7 (NanoPEC, Project 227179) are gratefully acknowledged. R.L., Z.H., and H.-J.L. are supported by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy under Award Number DE-SC0004993. | ||||||||||||
Group: | JCAP | ||||||||||||
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Subject Keywords: | electrochemistry; photochemistry; silicon; solar cells; water splitting | ||||||||||||
Issue or Number: | 10 | ||||||||||||
DOI: | 10.1002/cssc.201402456 | ||||||||||||
Record Number: | CaltechAUTHORS:20140825-111015375 | ||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140825-111015375 | ||||||||||||
Official Citation: | Han, L., Abdi, F. F., van de Krol, R., Liu, R., Huang, Z., Lewerenz, H.-J., Dam, B., Zeman, M. and Smets, A. H. M. (2014), Efficient Water-Splitting Device Based on a Bismuth Vanadate Photoanode and Thin-Film Silicon Solar Cells. ChemSusChem, 7: 2832–2838. doi: 10.1002/cssc.201402456 | ||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
ID Code: | 48846 | ||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||
Deposited By: | INVALID USER | ||||||||||||
Deposited On: | 25 Aug 2014 19:09 | ||||||||||||
Last Modified: | 10 Nov 2021 18:36 |
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