The layer boundary effect on multi-layer mesoporous TiO2 film based dye sensitized solar cells

Xu, Feng; Zhu, Kai; Zhao, Yixin

doi:10.1039/C6RA18830C

Title: The layer boundary effect on multi-layer mesoporous TiO₂ film based dye sensitized solar cells

Journal Article · Mon Oct 10 00:00:00 EDT 2016 · RSC Advances

DOI:https://doi.org/10.1039/C6RA18830C· OSTI ID:1332665

Xu, Feng ^[1]; Zhu, Kai ^[2]; Zhao, Yixin ^[1]

Shanghai Jiao Tong Univ. (China). School of Environmental Science and Engineering
National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemical and Materials Science Center

Multi-layer mesoporous TiO₂ prepared by screen printing is widely used for fabrication of high-efficiency dye-sensitized solar cells (DSSCs). Here, we compare the three types of ~10 um thick mesoporous TiO₂ films, which were screen printed as 1-, 2- and 4-layers using the same TiO₂ nanocrystal paste. The layer boundary of the multi-layer mesoporous TiO₂ films was observed in the cross-section SEM. The existence of a layer boundary could reduce the photoelectron diffusion length with the increase of layer number. However, the photoelectron diffusion lengths of the Z907 dye sensitized solar cells based on these different layered mesoporous TiO₂ films are all longer than the film thickness. Consequently, the photovoltaic performance seems to have little dependence on the layer number of the multi-layer TiO₂ based DSSCs.

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Research Organization:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: AC36-08GO28308; 51372151; 21303103; 151046

OSTI ID:: 1332665

Report Number(s):: NREL/JA-5900-67435; RSCACL

Journal Information:: RSC Advances, Vol. 6, Issue 100; ISSN 2046-2069

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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