Nanosized anatase TiO2 single crystals with tunable exposed (001) facets for enhanced energy conversion efficiency of dye-sensitized solar cells

Wu, Xia and Max Lu, Gao Qing and Wang, Lianzhou and Chen, Zhigang (2011) Nanosized anatase TiO2 single crystals with tunable exposed (001) facets for enhanced energy conversion efficiency of dye-sensitized solar cells. Advanced Functional Materials, 21 (21). pp. 4167-4172. ISSN 1616-301X

Abstract

This paper reports the synthesis of nanosized TiO2 single crystals with different percentages of exposed (001) facets in the presence of HF solution. Various characterizations are conducted to understand the correlation between particle morphology, exposed (001) facets and photo-conversion efficiency of the nanosized anatase TiO2 single crystals. An enhancement in dye-sensitized solar cells (DSSCs) overall conversion efficiency is observed for the photoanode consisting of nanosized TiO2 single crystals with higher percentage of exposed (001) facets, increasing from 7.47%, 8.14% to 8.49% for the TiO2 single crystals with ca. 10%, 38%, and 80% percentage of exposed (001) facets. Experimentally confirmed by dark current potential and open-circuit voltage decay scans, such highly exposed (001) facets are not only favorable for more dye adsorption but also effectively retard the charge recombination process in DSSCs.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 08 Jun 2017 01:17
Last Modified: 08 Jun 2017 01:17
Uncontrolled Keywords: anatase TiO; charge recombination process; current potential; dye adsorption; dye-sensitized solar cell; dye-sensitized solar cells; HF solutions; nano-sized; nanosized TiO; overall conversion efficiency; particle morphologies; photoanode; TiO; crystalline solids; inorganic compounds; chemical operations; optical devices and systems; electricity, basic concepts and phenomena; solar power; energy conversion
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
02 Physical Sciences > 0299 Other Physical Sciences > 029999 Physical Sciences not elsewhere classified
03 Chemical Sciences > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1002/adfm.201100828
URI: http://eprints.usq.edu.au/id/eprint/31731

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