钙钛矿薄膜缺陷调控策略在太阳能电池中的应用

王万海, 周杰, 唐卫华

Passivation Strategies of Perovskite Film Defects for Solar Cells

WANG Wanhai, ZHOU Jie, TANG Weihua

图3 (a)MAPbI3膜与PbI2的能级排列[21]; (b)PbI2分布于钙钛矿晶粒周围的MAPbI3膜的扫描电子显微镜(SEM)照片[21]; (c)CH3NH3PbI3膜中PbI2钝化的机理示意图[21]; (d)K+钝化的机理示意图[27]; (e)钾含量增加时钝化钙钛矿薄膜的光致发光量子效率(PLQE) [27]; (f)有/无钾钝化的(Cs,MA,FA) Pb(I0.4Br0.6)3最佳器件的电流密度-电压曲线[27]; (g)Cs10Rb5FAPbI3器件的稳定性测试[28]; (h)PCBM-钙钛矿混合溶液的紫外-可见光吸收光谱[34]

Fig. 3 (a) Energy level alignment of MAPbI3 film and PbI2[21]; (b) Scanning electron microscopy(SEM) image of MAPbI3 film with PbI2 wrapping the perovskite grain[21]; (c) Schematic diagram of mechanism for PbI2 passivation in CH3NH3PbI3 film[21]; (d) Schematic diagram of mechanism for K+ passivation[27]; (e) Photoluminescence quantum efficiency(PLQE) of passivated perovskite thin films with increasing fraction of potassium[27]; (f) Current density-voltage curves of the best-performing solar cells with (Cs, MA, FA) Pb(I0.4Br0.6)3 absorbers without and with potassium passivation[27]; (g) Stability for the Cs10Rb5FAPbI3 device[28]; (h) UV-Vis absorption spectra of the PCBM-perovskite hybrid solution[34] Colorful figures are available on website