Enhanced photovoltaic performance by modulating surface composition in bulk heterojunction polymer solar cells based
Xia Guo1, Maojie Zhang, Wei Ma
1State Key Laboratory of Polymer, Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China; University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
Advanced Materials (Deerfield Beach, Fla.)
|April 10, 2014
Abstract:
For the blend film of PBDTTT-C-T:PC71 BM, the use of 1,8-diiodooctane as the solvent additive enriches the polymer at the top surface, so that a power conversion efficiency of 9.13% is recorded in the inverted polymer solar cell based on the blend, which is much higher than that of the device with conventional structure.


