Journal
ELECTROCHIMICA ACTA
Volume 55, Issue 20, Pages 5798-5802Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.05.025
Keywords
Dye-sensitized solar cell; Heterojunction; [6,6]-Phenyl-C-61-butyric acid methyl ester; Poly(3-hexylthiophene)
Categories
Funding
- National High Technology Research and Development Program of China [2009AA03Z217]
- National Natural Science Foundation of China [90922028, 50842027]
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Using a blend heterojunction consisting of a C-60 derivative, [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM), and poly(3-hexylthiophene) (P3HT) as a charge carrier transfer medium to replace the I-3(-)/I- redox electrolyte, a novel TiO2/dye/PCBM/P3HT dye-sensitized solar cell was fabricated and characterized. It was found that the P3HT/PCBM heterojunction widened the incident light harvest range from ultraviolet to visible light, and improved the photoelectrical response of the dye-sensitized solar cell. We investigated the influence of the PCBM/P3HT ratio and barrier layer on the photoelectric performance of the solar cell and proposed optimized preparation conditions. The optimized solar cell with a barrier layer and PCBM/P3HT ratio of 1:2 had a short circuit current density of 5.52 mA cm(-2), an open circuit voltage of 0.87 V, a fill factor of 0.640 and a light-to-electric energy conversion efficiency of 3.09% under a simulated solar light irradiation of 100 mW cm(-2). (C) 2010 Elsevier Ltd. All rights reserved.
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