Preparation and Photovoltaic Properties Cu2O/TiO2 Nanorod Heterojunction Solar Cells
p-Cu2O/n-TiO2 nanorod heterojunction solar cells consisting of n-type TiO2 nanorod arrays encapsulated in the p-type Cu2O thin films were demonstrated by using hydrothermal reaction and electrodeposition. The effects of precursor reactant concentration and the growth time depended length of TiO2 nanorods and thickness of Cu2O thin films on the optical and electrical properties of the heterojunction were studied in detail. Experimental results show that under the irradiation of AM1.5G simulated sunlight with an intensity of 100 mw/cm2, the optimized photoelectric conversion efficiency is 0.63% with the short-circuit current density of 2.43 mA/cm2, the open circuit voltage of 0.68 V, and the fill factor of 0.66, while the corresponding thickness of Cu2O film is 500 nm and the length of TiO2 nanorods is 800 nm.
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Document Type: Research Article
Publication date: November 1, 2013
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