Multi-Length-Scale Morphologies Driven by Mixed Additives in Porphyrin-Based Organic Photovoltaics

Ke Gao; Jingsheng Miao; Liangang Xiao; Wanyuan Deng; Yuanyuan Kan; Tianxiang Liang; Cheng Wang; Fei Huang; Junbiao Peng; Yong Cao; Feng Liu; Thomas P Russell; Hongbin Wu; Xiaobin Peng

doi:10.1002/adma.201505645

Multi-Length-Scale Morphologies Driven by Mixed Additives in Porphyrin-Based Organic Photovoltaics

Adv Mater. 2016 Jun;28(23):4727-33. doi: 10.1002/adma.201505645. Epub 2016 Apr 9.

Authors

Ke Gao¹, Jingsheng Miao¹, Liangang Xiao¹, Wanyuan Deng¹, Yuanyuan Kan¹, Tianxiang Liang¹, Cheng Wang², Fei Huang¹, Junbiao Peng¹, Yong Cao¹, Feng Liu³, Thomas P Russell^{3

4}, Hongbin Wu¹, Xiaobin Peng¹

Affiliations

¹ Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, 381 Wushan Road, Guangzhou, 510640, China.
² Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.
³ Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.
⁴ Polymer Science and Engineering Department, University of Massachusetts, Amherst, MA, 01003, USA.

PMID: 27062394
DOI: 10.1002/adma.201505645

Abstract

A new category of deep-absorbing small molecules is developed. Optimized devices driven by mixed additives show a remarkable short-circuit current of ≈20 mA cm(-2) and a highest power conversion efficiency of 9.06%. A multi-length-scale morphology is formed, which is fully characterized by resonant soft X-ray scattering, high-angle annular dark film image transmission electron microscopy, etc.

Keywords: mixed additives; multi-length-scale morphologies; organic solar cells; porphyrin; small molecules.