分别制备了ITO/PEDOT-PSS/C8-PPE-BT+PCBM(1/4,w/w)/Ba/Al、ITO/PEDOT-PSS/C8-PPE-BT+MEH-PPV(1/1,w/w)/Ba/Al两种本体异质结光伏器件,发现这两种器件均表现出光伏效应.其中PPE-BT+PCBM器件表现出较高的能量转换效率达到0.084%,EQE为2.7%,比单层C8-PPE-BT器件的EQE提高了23倍.但当C8-PPE-BT与给体MEH-PPV构成器件时,其能量转换效率较差,分别为3.67×10-3%和2.54×10-3%.说明电子在C8-PPE-BT中的迁移率较小,尽管存在光诱导的电荷转移,但在未到达电极就被捕获.
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