Journal
CERAMICS INTERNATIONAL
Volume 40, Issue 6, Pages 8045-8052Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2013.12.156
Keywords
TiO2; AACVD
Categories
Funding
- University of Malaya Research Grant [RG197/11AFR]
- Ministry of Science, Technology and Innovation [06-01-04-SF1513]
- Ministry of Higher Education of Malaysia [UM.C/625/1/HIR/MOHE/05]
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Compact TiO2 has been introduced onto the surface of an indium tin oxide glass slide (ITO), using an aerosol-assisted chemical vapour deposition method. This serves as a blocking layer for a dye-sensitised solar cell (DSSC). The thickness of the compact TiO2 could be controlled by deposition time. X-ray diffraction and Raman spectroscopy analyses reveal that the compact TiO2 is made up of mixed anatase and ruffle phases. The field emission scanning electron microscopy image displays a pyramidal morphology of the compact TiO2. A layer of P25 paste was then smeared onto the compact TiO2-modified ITO, using the doctor's blade method. A post-treatment procedure was applied to remove the contaminants from the prepared hybrid film, by immersing in a hydrochloric acid solution. The photoelectrochemical measurements and J-V characterisation of the hybrid film show an approximately fourfold increase in photocurrent density generation (114.22 mu A/cm(2)), and approximately 25% enhancement of DSSC conversion efficiency (4.63%), compared to the acid-treated P25 paste alone (3.68%). (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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