Enhanced photovoltaic performance by modulating surface composition in bulk heterojunction polymer solar cells based on PBDTTT-C-T/PC71 BM

Xia Guo; Maojie Zhang; Wei Ma; Long Ye; Shaoqing Zhang; Shengjian Liu; Harald Ade; Fei Huang; Jianhui Hou

doi:10.1002/adma.201400411

Enhanced photovoltaic performance by modulating surface composition in bulk heterojunction polymer solar cells based on PBDTTT-C-T/PC71 BM

Adv Mater. 2014 Jun 25;26(24):4043-9. doi: 10.1002/adma.201400411. Epub 2014 Apr 8.

Authors

Xia Guo¹, Maojie Zhang, Wei Ma, Long Ye, Shaoqing Zhang, Shengjian Liu, Harald Ade, Fei Huang, Jianhui Hou

Affiliation

¹ State 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.

PMID: 24715264
DOI: 10.1002/adma.201400411

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.

Keywords: morphology; polymer solar cells; solvent additives; surface composition.

Publication types

Research Support, Non-U.S. Gov't