Effects of Deposition Rate on the Properties of Copper Phthalocyanine Thin Films
We investigated the effects of deposition rate on the properties of copper phthalocyanine (CuPc) thin films and the performance of CuPc/C60 heterojunction organic solar cells prepared by vacuum thermal evaporation method. We found that the organic solar cells with higher CuPc deposition rate (RCuPc) of 4.0 (A)/s showed a larger short circuit current density and a higher power conversion efficiency of around 1.3％, which was increased about 2-fold compared to that of the devices with RCuPc of 0.1 (A)s. We found that the CuPc single layer devices with higher RCuPc exhibited a larger current density. We used the space charge limited current and trapped charge limited current models to explain the current density (J)-voltage (V) characteristics of the CuPc single layer devices. We inferred that a decreased mobility and increased trap density in CuPc layer with decreased RCuPc may be the possible reason for the observed dependence between the performance of organic solar cells and the RCuPc.
CuPc deposition rate mobility trap
Shuang Li Xiang Zhou
State Key Lab of Optoelectronic Materials and Technologies,Sun Yat-Sen University, Guangzhou, 510275 State Key Lab of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou, 51027
国际会议
The 11th Asian Symposium on Information Display(ASID09)(第11届亚洲信息显示会议)
广州
英文
241-244
2009-10-07（万方平台首次上网日期，不代表论文的发表时间）