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Improved efficiency of dye-sensitized solar cells through fluorine-doped TiO2 blocking layer

Authors
Noh, Suk InBae, Kokn-NaraAhn, Hyo-JinSeong, Tae-Yeon
Issue Date
9월-2013
Publisher
ELSEVIER SCI LTD
Keywords
Dye-sensitized solar cell; F-doped TiO2; Interfacial resistance; Blocking layer
Citation
CERAMICS INTERNATIONAL, v.39, no.7, pp.8097 - 8101
Indexed
SCIE
SCOPUS
Journal Title
CERAMICS INTERNATIONAL
Volume
39
Number
7
Start Page
8097
End Page
8101
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/102348
DOI
10.1016/j.ceramint.2013.03.082
ISSN
0272-8842
Abstract
We report on improvement in the performance of dye-sensitized solar cells (DSSCs) through a fluorine (F)-doped TiO2 dense layer for use as a blocking layer. The F-doped TiO2 layer was deposited on commercial F-doped SnO2 (FTO) substrate by the hydrolysis of a TiCl4 aqueous solution with NH4F. Their structural, morphological, and optical properties were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy examinations. The photocurrent density-voltage characteristics show that DSSCs fabricated with the F-doped TiO2 layer exhibits higher conversion efficiency (similar to 5.24%) than ones with the undoped TiO2 layer (similar to 4.76%), and the bare FTO substrate (similar to 3.88%). This improvement is attributed to the combined effects of reduced interfacial resistance and effective blocking behavior by the F-doped TiO2 dense layer. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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SEONG, TAE YEON
공과대학 (신소재공학부)
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