Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16570
Title: A facile route to fabricate an anodic TiO2 nanotube-nanoparticle hybrid structure for high efficiency dye-sensitized solar cells
Authors: Lin, J
Liu, X
Guo, M
Lu, W
Zhang, G
Zhou, L 
Chen, X
Huang, H 
Issue Date: 2012
Publisher: Royal Soc Chemistry
Source: Nanoscale, 2012, v. 4, no. 16, p. 5148-5153 How to cite?
Journal: Nanoscale 
Abstract: The relatively low internal surface area of anodized TiO2 nanotube arrays (TNAs) limits dye adsorption and light capturing in TNA-based dye-sensitized solar cells (DSSCs). Here, water treatment of as-anodized TNAs at room temperature was used to tailor the geometry of TNA walls in a controllable way, leading to a hybrid tube wall structure with the outer shell in a tubular morphology and the inner surface consisting of small particles. To enable front-side illumination in DSSCs, the TNAs with porous inner walls were transferred to transparent conductive oxide substrates by a self-detaching and transfer technique. The roughened water-treated TNAs show significantly enhanced internal surface area, leading to improved dye-loading and light-harvesting capabilities. Optimized performance was achieved after water treatment for 2 days, with a power conversion efficiency of 6.06%, increased by similar to 33% compared to conventional TNAs. Furthermore, the hybrid TNA nanostructure provides excellent electron transfer and recombination characteristics, thus promising for high efficiency DSSCs.
URI: http://hdl.handle.net/10397/16570
ISSN: 2040-3364
DOI: 10.1039/c2nr31268a
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