Issue 1, 2019

A generic green solvent concept boosting the power conversion efficiency of all-polymer solar cells to 11%

Abstract

Advances in organic photovoltaic technologies have always been closely associated with a deeper understanding of bulk-heterojunction (BHJ) microstructure morphology, which is generally governed by the ink-formulation based on a single solvent or solvent mixtures. The relatively slow progress in all-polymer solar cells (all-PSCs) is mainly due to the significant difficulty in mastering their intricate BHJ morphology dealing with entanglements of polymer chains, limiting their performance typically to 8–10%. In this work, we demonstrate that the performance of all-PSCs can be further developed to a benchmark value of 11% by manipulating the BHJ morphology using a green solvent system based on cyclopentyl methyl ether (CPME). The generic applicability of the superior ink-formulation is successfully validated in four different all-polymer solar cells, exhibiting great promise of advancing all-PSCs towards industrial production and commercialization.

Graphical abstract: A generic green solvent concept boosting the power conversion efficiency of all-polymer solar cells to 11%

Supplementary files

Article information

Article type
Communication
Submitted
29 Sept. 2018
Accepted
20 Nov. 2018
First published
20 Nov. 2018

Energy Environ. Sci., 2019,12, 157-163

A generic green solvent concept boosting the power conversion efficiency of all-polymer solar cells to 11%

Z. Li, L. Ying, P. Zhu, W. Zhong, N. Li, F. Liu, F. Huang and Y. Cao, Energy Environ. Sci., 2019, 12, 157 DOI: 10.1039/C8EE02863J

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