High-efficiency all-polymer solar cells based on a pair of crystalline low-bandgap polymers

Cheng Mu; Peng Liu; Wei Ma; Kui Jiang; Jingbo Zhao; Kai Zhang; Zhihua Chen; Zhanhua Wei; Ya Yi; Jiannong Wang; Shihe Yang; Fei Huang; Antonio Facchetti; Harald Ade; He Yan

doi:10.1002/adma.201402473

High-efficiency all-polymer solar cells based on a pair of crystalline low-bandgap polymers

Adv Mater. 2014 Nov 12;26(42):7224-30. doi: 10.1002/adma.201402473. Epub 2014 Sep 19.

Authors

Cheng Mu¹, Peng Liu, Wei Ma, Kui Jiang, Jingbo Zhao, Kai Zhang, Zhihua Chen, Zhanhua Wei, Ya Yi, Jiannong Wang, Shihe Yang, Fei Huang, Antonio Facchetti, Harald Ade, He Yan

Affiliation

¹ Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, KowLoon, Hong Kong, China.

PMID: 25238661
DOI: 10.1002/adma.201402473

Abstract

All-polymer solar cells based on a pair of crystalline low-bandgap polymers (NT and N2200) are demonstrated to achieve a high short-circuit current density of 11.5 mA cm-2 and a power conversion efficiency of up to 5.0% under the standard AM1.5G spectrum with one sun intensity. The high performance of these NT:N2200-based cells can be attributed to the low optical bandgaps of the polymers and the reasonably high and balanced electron and hole mobilities of the NT:N2200 blends due to the crystalline nature of the two polymers.

Keywords: all polymer solar cell; domain size; low bandgap polymer; resonant soft X-ray scattering.