光电流
材料科学
光电子学
氧化铟锡
吸收(声学)
酞菁
能量转换效率
光活性层
二氧化钛
图层(电子)
激子
有机太阳能电池
光电导性
电子受体
电子迁移率
铟
活动层
聚合物太阳能电池
光化学
聚合物
纳米技术
化学
薄膜晶体管
复合材料
物理
量子力学
作者
Liang Shen,Guowei Zhu,Wenbin Guo,Chen Tao,Xindong Zhang,Caixia Liu,Weiyou Chen,Shengping Ruan,Zhicheng Zhong
摘要
In this work, a new type of TiO2/polymer solar cells was fabricated. The device structure was indium tin oxide titanium dioxide (TiO2)/ copper phthalocyanine (CuPc)/poly(3-hexylthiophene) (P3HT)/Au. In this architecture, TiO2 was designed to act as electron acceptor, and P3HT was electron donor. CuPc was used as a sensitizer to enhance photon absorption. The results show that by inserting CuPc between P3HT and TiO2 layers, the light absorption, excitons separation, and photocurrent under illumination are dramatically improved. The device has a short current density (JSC) of 1.15mA∕cm2 and power conversion efficiency (η) of 0.28% without CuPc layer. However, JSC and η turn to be 2.22mA∕cm2 and 0.66%, respectively, with a 20nm thickness CuPc layer under air mass 1.5 global (AM1.5G) illumination with the intensity of 100mW∕cm2. The performance improvement can be attributed to the higher carrier mobility and the stronger photon absorption using CuPc as a sensitizing layer.
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