A prototype of three-dimensional transparent current collector with enhanced charge collection

作者：Yang, Guangwu^*; Zhao, Fuzhen; He, Bing; Guo, Wenyue; Lu, Xiaoqing; Xue, Qingzhong

来源：Optoelectronics and Advanced Materials-Rapid Communications, 2016, 10(5-6): 405-409.

• Three-dimensional
• Transparent current collector
• Zinc oxide microrod
• Dye-sensitized solar cell
• Charge collection

We report in this paper a prototype of three-dimensional transparent current collector (3D-TCC) with enhanced charge collection, which is achieved by growing low-density and large diameter ZnO microrod arrays on fluorinated tin oxide (FTO) substrates. Structure, morphology, electrical and optical properties of 3D-TCC are discussed. The charge collection properties of this novel 3D-TCC are studied by comparing it with those of conventional FTO for use as a current collector in dye-sensitized solar cells (DSCs). The electrochemical impedance spectroscopy analysis reveals that the electron transport, electron lifetime, effective diffusion length and the electron collection efficiency are increased, while the charge recombination is reduced, resulting in the remarkably enhanced power conversion efficiency of 7.17%, higher by 17% than conventional DSCs using FTO glass. These results indicate that the proposed 3D-TCC can be considered as a superior electrode for various types of photovoltaic devices.

• 出版日期2016-6
• 单位中国石油大学（北京）; 山东大学