Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/96247
Title: | Improved anatase phase stability in small diameter TiO2 nanotube arrays for high performance dye-sensitized solar cells | Authors: | Liu, X Lin, J Tsang, YH Chen, X Hing, P Huang, H |
Issue Date: | 15-Sep-2014 | Source: | Journal of alloys and compounds, 15 Sept. 2014, v. 607, p. 50-53 | Abstract: | Anatase is the preferred phase of TiO2 in dye-sensitized solar cells (DSSCs) because of its lower charge recombination than other phases. However, for small diameter nanotubes before detached from the Ti foil, rutile rather than anatase appears upon a pre-treatment annealing at 400 °C or above. Here we have fabricated highly ordered free-standing small diameter (50 nm) TiO2 nanotube membranes which were pre-treated at 300 °C to maintain pure anatase phase. The free-standing nanotube membranes were used to fabricate the photoanodes and were further calcined at 500 °C to achieve full crystallization of the nanotubes. It was shown that the electron lifetime is much longer in the 300 °C-pre-treated nanotubes than those pre-treated at 400 or 500 °C, leading to a significantly improved power conversion efficiency of 4.59% (enhanced by ∼50%). | Keywords: | Dye-sensitized solar cells Electron recombination Phase transitions Small diameter nanotube |
Publisher: | Elsevier | Journal: | Journal of alloys and compounds | ISSN: | 0925-8388 0925-8388 |
EISSN: | 1873-4669 | DOI: | 10.1016/j.jallcom.2014.04.083 | Rights: | © 2014 Elsevier B.V. All rights reserved. © 2014. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Liu, X., Lin, J., Tsang, Y. H., Chen, X., Hing, P., & Huang, H. (2014). Improved anatase phase stability in small diameter TiO2 nanotube arrays for high performance dye-sensitized solar cells. Journal of alloys and compounds, 607, 50-53 is available at https://doi.org/10.1016/j.jallcom.2014.04.083. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Improved_Anatase_Phase.pdf | Pre-Published version | 783.02 kB | Adobe PDF | View/Open |
Page views
66
Last Week
0
0
Last month
Citations as of Oct 13, 2024
Downloads
40
Citations as of Oct 13, 2024
SCOPUSTM
Citations
10
Citations as of Oct 17, 2024
WEB OF SCIENCETM
Citations
10
Citations as of Oct 10, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.