基于界面修饰的钙钛矿太阳能电池的制备及性能研究

Preparation and Properties of Perovskite Solar Cells Based on Interfacial Modification

以n-i-p平面型钙钛矿太阳能为标准器件[FTO/SnO_(2)/Cs_(0.05)(FA_(0.8)MA_(0.15))Pb(I_(0.85)Br_(0.15))_(3)/Spiro-OMeTAD/Au],利用有机富勒烯材料PCBM,在电子传输层和钙钛矿层之间形成超薄钝化层,以抑制空穴在ETL与钙钛矿层间的背向传输,并通过减少界面处电荷的积累,使电子和空穴传输达到平衡,从而获得PCE达15.92%且无迟滞现象的钙钛矿太阳能电池。

Applied n-i-p-type planar perovskite solar cells(FTO/SnO_(2)/Cs_(0.05))(FA_(0.8)MA_(0.15))Pb(I_(0.85)Br_(0.15))_(3)/Spiro-OMeTAD/Au as standard devices,the organic fullerene material PCBM was used to form an ultrathin passivation layer between the electron transport layer and the perovskite layer,which suppressed the back transport of holes between the ETL and the perovskite layer,and achieved the purpose of electron and hole transport balance by reducing the accumulation of charges at the interface.Ultimately,the perovskite solar cell achieved a PCE of 15.92%with negligible hysteresis.