Towards Improvement of Photovoltaic Performance of Aqueous Dye-sensitized Solar Cells by Tungsten-doped Mesoporous Nanobeads TiO2 Working Electrode
作者： Yanrong Guo , Tingting Zou , Qin Cheng , Binqing Jiao , Xiaoli Zhang
DOI: 10.1007/S11595-019-2008-Z
关键词:
摘要: Tungsten doped (W-doped) TiO2 mesoporous nanobeads, possessing high surface area and superior scattering effect, were used for photoanode preparation. The W-doping would induce a positive shift of the conduction band, enhance driving force electron injection collection efficiencies. electrochemical impedance spectra indicated retarded charge recombination increased diffusion length after W-doping. By fine-tuning concentration to 0.25%, aqueous DSCs produced significant improved open circuit voltage 712 mV short current 7.05 mA·cm-2, leading an overall power conversion efficiency 3.40% at 1 000 W·m-2 simulated irradiation, which is roughly 25% enhancement compared that without photoanode.
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