Solvothermal growth of Zn2SnO4 for efficient dye-sensitized solar cells

• 作者: Yu-Fen Wang Hui Feng Yi-Rui Deng Fei-Fei Xin De-Jun Li Zhuo-Fan Hu Lei Zhang Rui-Ping Liu
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2022,（3）
• 所属期刊栏目: ORIGINAL ARTICLES
• 页码范围: 942-950
• 页数: 9页
• 语种: 英文

摘要

Zn2SnO4 plates,particles and spheres are suc-cessfully prepared via a facile synthesis way by carefully adjusting the solvothermal conditions,which are further applied as photoanodes in dye-sensitized solar cells(DSSCs)to explore the relationships between the pho-toanode nanostructure and the photovoltaic performances.As a result,the DSSCs based on Zn2SnO4 spheres pho-toanode showcased the best power conversion efficiency(PCE,4.85％),compared to Zn2SnO4 plates(3.80％)and particles(4.13％).It is found that Zn2SnO4 spheres exhibit the highest light-scattering abilities,as evidenced by ultraviolet-visible(UV-Vis)diffuse reflectance spectra.Additionally,investigations on dynamic electron transport and recombination properties via intensity-modulated photovoltage/photocurrent spectroscopy(IM VS/IMPS),and electrochemical impedance spectroscopy(EIS)mea-surements demonstrate that the Zn2SnO4 spheres-based DSSCs possess the fastest electron transport rate,the longest electron lifetime,the highest electron collection efficiency(ηcc),and the largest charge recombination resistance,compared with the Zn2SnO4 plates and particles,all of which are highly beneficial for the powder conversion efficiency enhancements.