Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9472
Title: Open-ended TiO2 nanotubes formed by two-step anodization and their application in dye-sensitized solar cells
Authors: Yip, CT
Guo, M
Huang, H 
Zhou, L 
Wang, Y 
Huang, C
Issue Date: 2012
Publisher: Royal Soc Chemistry
Source: Nanoscale, 2012, v. 4, no. 2, p. 448-450 How to cite?
Journal: Nanoscale 
Abstract: We demonstrate a simple method to fabricate open-ended TiO2 nanotube (NT) based dye-sensitized solar cells (DSSCs), where the NTs are attached to either TiO2 nanorods (NRs) grown on fluorinedoped tin oxide (FTO) or FTO directly by nanoparticles (NPs). A completely hole-through TiO2 NT layer is fabricated via a two-step anodization with heat treatment immediately after the first anodization. DSSCs with the open-ended NTs show better photovoltaic performance than those with close-ended NTs, due to the enhanced charge transport in the open-ended structure. Under optimum conditions, DSSCs fabricated with the open-ended NT layer exhibit a short circuit current density (J(sc)) of 19.10 mA cm(-2), an open circuit voltage (V-oc) of 0.68 V, a fill factor (FF) of 0.49, and a power conversion efficiency (eff) of 6.3%.
URI: http://hdl.handle.net/10397/9472
ISSN: 2040-3364
DOI: 10.1039/c2nr11317a
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