摘要
The effect of a new interfacial buffer layer material,rhenium oxide(ReO3),on the performance of polymer solar cells based on regioregular poly(3-hexylthiophene)(P3HT) and methanofullerene [6,6]-phenyl C61-butyric acid methyl ester(PCBM) blend is investigated.The effect of the thickness of the oxide layer on electrical characteristics of the device is also studied.Compared with traditional devices,by inserting a 10 nm-thick ReO3 as the anode buffer layer,a power conversion efficiency(PCE) of 2.8 %(a 37% improvement compared with the control devices) can be obtained with Jsc of 13.6 mA/cm2,Voc of 0.45 V,and a fill factor(FF) of 53.6% under the simulated AM1.5 G 100 mW/cm2 illumination in air.It is indicated that ReO3 can be used as an effective buffer layer to enhance the polymer bulk heterojunction(BHJ) photovoltaic cell efficiency.
The effect of a new interfacial buffer layer material,rhenium oxide（ReO3）,on the performance of polymer solar cells based on regioregular poly（3-hexylthiophene）（P3HT） and methanofullerene [6,6]-phenyl C61-butyric acid methyl ester（PCBM） blend is investigated.The effect of the thickness of the oxide layer on electrical characteristics of the device is also studied.Compared with traditional devices,by inserting a 10 nm-thick ReO3 as the anode buffer layer,a power conversion efficiency（PCE） of 2.8 %（a 37% improvement compared with the control devices） can be obtained with Jsc of 13.6 mA/cm2,Voc of 0.45 V,and a fill factor（FF） of 53.6% under the simulated AM1.5 G 100 mW/cm2 illumination in air.It is indicated that ReO3 can be used as an effective buffer layer to enhance the polymer bulk heterojunction（BHJ） photovoltaic cell efficiency.
基金
supported by the National Natural Science Foundation of China (Nos.50503017,60876046 and 60976048)
the Key Project of Education Ministry of China (No.209007)
the Natural Science Foundation of Tianjin (No.07JCYBJC03200)
