Issue 2, 2012

Open-ended TiO2nanotubes formed by two-step anodization and their application in dye-sensitized solar cells

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 fluorine-doped 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 (Jsc) of 19.10 mA cm−2, an open circuit voltage (Voc) of 0.68 V, a fill factor (FF) of 0.49, and a power conversion efficiency (eff) of 6.3%.

Graphical abstract: Open-ended TiO2 nanotubes formed by two-step anodization and their application in dye-sensitized solar cells

Supplementary files

Article information

Article type
Communication
Submitted
16 Sep 2011
Accepted
26 Nov 2011
First published
12 Dec 2011

Nanoscale, 2012,4, 448-450

Open-ended TiO2 nanotubes formed by two-step anodization and their application in dye-sensitized solar cells

C. Yip, M. Guo, H. Huang, L. Zhou, Y. Wang and C. Huang, Nanoscale, 2012, 4, 448 DOI: 10.1039/C2NR11317A

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