PCBM对钙钛矿太阳能电池界面改性的研究

Study on interface modification of perovskite solar cells by PCBM

采用富勒烯衍生物(PCBM)修饰界面改性的方法对钙钛矿太阳能电池钙钛矿层和电子传输层进行界面改性,钝化界面缺陷;研究PCBM界面修饰对钙钛矿结晶情况和电子传输性能的影响。结果表明,与不添加修饰层的样品相比,修饰后的钙钛矿薄膜更加平整光滑、孔洞减少、结晶性能变好、吸光度有所增加、界面缺陷减少、电子传输性能提高。

Fullerene derivatives(PCBM)is used to modify the perovskite layer and electron transfer layer of perovskite solar cells,passivate the interface defect.The effect of PCBM-involved interface modification on perovskite crystallization and electron transfer properties is studied.It is shown that compared with the sample without modification layer,the modified perovskite film is smoother,has less pores and better crystallization property,and exhibits a higher absorbance.In addition,the photoluminescence spectra results show that the modified samples have less interface defects and stronger electron transfer performance.