WANG Yanxiang, HUANG Jie, YANG Zhisheng, HUANG Liqun, LI Jiake, SUN Jian

(Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)

Abstract: CsSnI₃-xFx solid electrolyte was prepared via solid sintering method using cesium iodide stannous iodide and tin bifluoride as raw materials. The influence of doping of CsSnI₃ with F and SnF₂ on the performance of solar cell was studied. The light voltage curve (I-V Curve), electrochemical impedance spectroscopy (EIS) and incident photon-to-current conversion efficiency (IPCE) were used to characterize the performance of the solar cells. The study shows that Cs, Sn, I, and F were evenly distributed within the photoanode. At an optimum molar concentration of 5.00% F and 5.00% SnF₂, the cell exhibits the highest efficiency. The photoelectric conversion efficiency was 5.18 %, which was 33.58 % lower than that of liquid electrolyte (7.80 %).

Key words: dye-sensitized solar cells; perovskite; CsSnI₃; solid state electrolyte