Huang Jinzhao, Yao Nannan, Deng Xiaolong, Fu Ke, Chen Siyuan
School of Physics and Technology, University of Jinan, Jinan 250022, Shandong Province, P. R. China.
J Nanosci Nanotechnol. 2018 May 1;18(5):3693-3696. doi: 10.1166/jnn.2018.14852.
In this paper, graphene modified by Ag nanoparticles was successfully applied into dye sensitized solar cells. The morphologies and compositions of graphene and graphene-Ag nanoparticles were characterized by scanning electron microscope and energy dispersive X-ray spectroscopy. The optical and electrical properties were evaluated by UV-vis-NIR absorption spectroscopy, electrochemical impedance spectroscopy and current-voltage curve. The results indicated that the incorporation of graphene or graphene-Ag nanoparticles can improve the light absorption and decrease the charge recombination. The solar cells with graphene-Ag nanoparticles exhibited short-circuit current density of 14.34 mA cm-2, open-circuit voltage of 709 mV and conversion efficiency of 6.01%, which were higher than those of DSSCs with graphene or pure TiO2.
在本文中，银纳米颗粒修饰的石墨烯被成功应用于染料敏化太阳能电池。通过扫描电子显微镜和能量色散X射线光谱对石墨烯和石墨烯-银纳米颗粒的形态和组成进行了表征。通过紫外-可见-近红外吸收光谱、电化学阻抗谱和电流-电压曲线对光学和电学性质进行了评估。结果表明，石墨烯或石墨烯-银纳米颗粒的掺入可以提高光吸收并减少电荷复合。具有石墨烯-银纳米颗粒的太阳能电池表现出14.34 mA cm-2的短路电流密度、709 mV的开路电压和6.01%的转换效率，高于具有石墨烯或纯二氧化钛的染料敏化太阳能电池。
