Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7938816 | Superlattices and Microstructures | 2018 | 15 Pages |
Abstract
In this work, we demonstrate an efficient cascade multiple heterojunction organic solar cell with inverted structure. By using two donor materials, poly(3-hexylthiosphene) (P3HT) and titanyl phthalocyanine (TiOPc), as well as two acceptor materials, [6,6]-phenyl C61 butyric acid methyl ester (PCBM) and C60, the cascade multiple heterojunctions of P3HT:PCBM/TiOPc:C60/C60 have been constructed. Applying the optimized inverted configuration of FTO/Zinc Tin Oxide (ZTO)/C60 (30â¯nm)/TiOPc:C60 (1:1.5, 25â¯nm)/P3HT:PCBM (1:0.8, 100â¯nm)/MoO3 (4â¯nm)/Ag, the considerably enhanced open circuit voltage (VOC) and short circuit current (JSC) can be harvested together, and the power conversion efficiency (PCE) is three times higher than that of the control cell with conventional structure. The significant improvements of the inverted cell are mostly due to the broadened spectral absorption and high efficient multi-interface exciton dissociation in the cascade multiple heterojunctions, indicating that the optimized cascade heterojunctions match the inverted structure well.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Tingting Guo, Mingtao Li, Zhenfang Qiao, Leiming Yu, Jianhong Zhao, Nianjun Feng, Peiguang Shi, Xiaoyan Wang, Xiaoyun Pu, Hai Wang,