Issue 5, 2015

Enhanced efficiency of polymer solar cells by adding a high-mobility conjugated polymer

Abstract

The performance of organic solar cells is substantially enhanced by introducing high-mobility conjugate polymers as additives for the first time. The most pronounced effect is observed in one type of device with the average power conversion efficiencies increased from 8.75% to 10.08% after the addition of a high-mobility polymer for only 0.5 weight percent in the active layers, which is mainly attributed to the increased hole mobility and carrier lifetime in the devices. Besides the hole mobility, the energy band structure of the additive is also found to be critical to the enhancement of the device performance. This work demonstrates a novel approach for improving the efficiencies of organic solar cells.

Graphical abstract: Enhanced efficiency of polymer solar cells by adding a high-mobility conjugated polymer

Supplementary files

Article information

Article type
Communication
Submitted
10 Jan 2015
Accepted
13 Mar 2015
First published
13 Mar 2015

Energy Environ. Sci., 2015,8, 1463-1470

Author version available

Enhanced efficiency of polymer solar cells by adding a high-mobility conjugated polymer

S. Liu, P. You, J. Li, J. Li, C. Lee, B. S. Ong, C. Surya and F. Yan, Energy Environ. Sci., 2015, 8, 1463 DOI: 10.1039/C5EE00090D

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