High-performance semi-transparent polymer solar cells possessing tandem structures

Chun-Chao Chen; Letian Dou; Jing Gao; Wei-Hsuan Chang; Gang Li; Yang Yang

doi:10.1039/C3EE40860D

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Energy & Environmental Science

Issue 9, 2013

A journal linking all aspects of the chemical, physical and biotechnological sciences relating to energy conversion and storage, alternative fuel technologies and environmental science.

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Paper

High-performance semi-transparent polymer solar cells possessing tandem structures

Chun-Chao Chen,^a Letian Dou,^a^b Jing Gao,^a Wei-Hsuan Chang,^a^b Gang Li^a and Yang Yang*^a^b

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Departments of Materials Science & Engineering, University of California, Los Angeles, Los Angeles, USA
E-mail: yangy@ucla.edu

California NanoSystems Institute, University of California, Los Angeles, Los Angeles, USA

Energy Environ. Sci., 2013,6, 2714-2720

DOI: 10.1039/C3EE40860D
Received 12 Mar 2013, Accepted 26 Jun 2013
First published online 26 Jul 2013

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In this study we employed tandem device architectures to tune the external appearance and light-conversion properties of polymer solar cells (PSCs) from visibly transparent to semi-transparent, making them more versatile for integrated photovoltaic applications and more efficient under solar illumination. Our best transparent solar cell was a tandem PSC exhibiting an efficiency of 6.4% and a maximum transmission of 51% at 550 nm; in contrast, a semi-transparent tandem PSC having an average transmission of 30% in the visible range exhibited an efficiency greater than 7%.