title: Double-Sided Transparent TiO2Nanotube/ITO Electrodes for Efficient CdS/CuInS2Quantum Dot-Sensitized Solar Cells.
abstract: In this paper, to improve the power conversion efficiencies (PCEs) of quantum dot-sensitized solar cells (QDSSCs) based on CdS-sensitized TiO2nanotube (TNT) electrodes, two methods are employed on the basis of our previous work. First, by replacing the traditional single-sided working electrodes, double-sided transparent TNT/ITO (DTTO) electrodes are prepared to increase the loading amount of quantum dots (QDs) on the working electrodes. Second, to increase the light absorption of the CdS-sensitized DTTO electrodes and improve the efficiency of charge separation in CdS-sensitized QDSSCs, copper indium disulfide (CuInS2) is selected to cosensitize the DTTO electrodes with CdS, which has a complementary property of light absorption with CdS. The PCEs of QDSSCs based on these prepared QD-sensitized DTTO electrodes are measured. Our experimental results show that compared to those based on the CdS/DTTO electrodes without CuInS2, the PCEs of the QDSSCs based on CdS/CuInS2-sensitized DTTO electrode are significantly improved, which is mainly attributed to the increased light absorption and reduced charge recombination. Under simulated one-sun illumination, the best PCE of 1.42% is achieved for the QDSSCs based on CdS(10)/CuInS2/DTTO electrode, which is much higher than that (0.56%) of the QDSSCs based on CdS(10)/DTTO electrode.
authors.affiliation: Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, 475004, People's Republic of China. chongchen@henu.edu.cn.|School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China. chongchen@henu.edu.cn.
authors.forename: Chong
authors.initials: C
authors.lastname: Chen
authors.affiliation: School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China.
authors.forename: Lanyu
authors.initials: L
authors.lastname: Ling
authors.affiliation: Henan Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng, 475004, People's Republic of China. lfm0613@gmail.com.|School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China. lfm0613@gmail.com.
authors.forename: Fumin
authors.initials: F
authors.lastname: Li