Journal
JOURNAL OF POWER SOURCES
Volume 225, Issue -, Pages 263-268Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.10.036
Keywords
Water splitting; Tandem; Photoanode; Photocurrent; Nanorod
Funding
- NRF
- Korea Ministry of Education, Science and Technology (MEST) [NRF-2009-C1AAA001-2009-0094157]
- Korea Ministry of Education, Science and Technology (MEST) (the NCRC program) [2011-0006268]
- Korea Ministry of Education, Science and Technology (MEST) (Hydrogen Energy R&D Center (21st Century Frontier RD Program)
- New and Renewable Energy Program through the KETEP
- Ministry of Knowledge Economy (MKE) [008NPV08J010000]
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The present work reports fabrication of vertically aligned CdS sensitized TiO2 nanorod arrays grown on transparent conducting oxide substrate with high transparency as a photoanode in photoelectrochemical cell for water splitting. To realize an unassisted water splitting system, the photoanode and dye-sensitized solar cell tandem structures are tried and their electrochemical behaviors are also investigated. The hydrothermally grown TiO2 nanorod arrays followed by CdS nanoparticle decoration can improve the light absorption of long wavelength light resulting in increased photocurrent density. Two different techniques (electrodeposition and spray pyrolysis deposition) of CdS nanoparticle sensitization are carried out and their water splitting behaviors in the tandem cell are compared. (C) 2012 Elsevier B.V. All rights reserved.
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