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Title: CdS sensitized 3D hierarchical TiO2/ZnO heterostructure for efficient solar energy conversion
Authors: Zheng, Z
Xie, W
Lim, Z.S 
You, L
Wang, J
Issue Date: 2014
Citation: Zheng, Z, Xie, W, Lim, Z.S, You, L, Wang, J (2014). CdS sensitized 3D hierarchical TiO2/ZnO heterostructure for efficient solar energy conversion. Scientific Reports 4 : 5721. ScholarBank@NUS Repository.
Rights: Attribution 4.0 International
Abstract: For conventional dye or quantum dot sensitized solar cells, which are fabricated using mesoporous films, the inefficient electron transport due to defects such as grain boundaries and surface traps is a major drawback. To simultaneously increase the carrier transport efficiency as well as the surface area, optimal-assembling of hierarchical nanostructures is an attractive approach. Here, a three dimensional (3D) hierarchical heterostructure, consisting of CdS sensitized one dimensional (1D) ZnO nanorods deposited on two dimensional (2D) TiO2 (001) nanosheet, is prepared via a solution-process method. Such heterstructure exhibits significantly enhanced photoelectric and photocatalytic H 2 evolution performance compared with CdS sensitized 1D ZnO nanorods/1D TiO2 nanorods photoanode, as a result of the more efficient light harvesting over the entire visible light spectrum and the effective electron transport through a highly connected 3D network.
Source Title: Scientific Reports
ISSN: 20452322
DOI: 10.1038/srep05721
Rights: Attribution 4.0 International
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