Journal
JOURNAL OF POWER SOURCES
Volume 275, Issue -, Pages 175-180Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.11.006
Keywords
Dye-sensitized solar cell; Photoanode; Titanium dioxide/calcium fluoride; Light harvest; Light interference
Funding
- Fundamental Research Funds for the Central Universities [201313001, 201312005]
- Shandong Province Outstanding Youth Scientist Foundation Plan [BS2013CL015]
- Shandong Provincial Natural Science Foundation [ZR2011BQ017]
- Research Project for the Application Foundation in Qingdao [13-4-198-jch]
- National Natural Science Foundation of China [51102219, 51342008]
- National Key and National Key Technology Support Program [2012BAS15B02]
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Enhancement of light harvest for dye excitation is a persistent objective in dye-sensitized solar cell (DSSC). We present here the fabrication of titanium dioxide/calcium fluoride (TiO2/CaF2) photoanodes for efficient DSSC applications. Owing to the interference effect of incident light beams reflected from TiO2/CaF2 and CaF2/electrolyte interfaces, the light intensity and therefore dye excitation have been markedly enhanced. The crystal structure and therefore photovoltaic performance are optimized by adjusting CaF2 dosage. A maximum power conversion efficiency of 7.66% is measured from the DSSC employing TiO2/ 0.5 wt% CaF2 nanocrystallite in comparison with 6.02% for the solar cell with pristine TiO2 anode. (C) 2014 Elsevier B.V. All rights reserved.
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