Issue 37, 2014

High efficiency organic/a-Si hybrid tandem solar cells with complementary light absorption

Abstract

Organic/amorphous silicon (a-Si) hybrid tandem solar cells have the potential to provide a highly efficient low-cost photovoltaic technology using abundant elements, and the technology is adaptable to large-scale processes. With their high open-circuit voltage (Voc) and adaptability to a broad solar spectrum, organic/a-Si tandem devices offer significantly improved performance. We have shown that organic/a-Si hybrid tandem solar cells with a complementary organic absorber can exhibit a power conversion efficiency (PCE) of up to 7.5%, with a fill factor (FF) of 72.3% and a Voc almost equivalent to the sum of the sub-cells under standard air mass (AM) 1.5 illumination. The high performance of the device results from the complementary absorption spectra of two sub-cells and well-matched energy levels of the intermediate layer. This study provides an effective design strategy for organic/a-Si hybrid tandem solar cells of improved efficiency.

Graphical abstract: High efficiency organic/a-Si hybrid tandem solar cells with complementary light absorption

Supplementary files

Article information

Article type
Communication
Submitted
29 5 2014
Accepted
25 7 2014
First published
29 7 2014

J. Mater. Chem. A, 2014,2, 15303-15307

High efficiency organic/a-Si hybrid tandem solar cells with complementary light absorption

W. Qin, W. Yu, W. Zi, X. Liu, T. Yuan, D. Yang, S. Wang, G. Tu, J. Zhang, F. S. Liu and C. Li, J. Mater. Chem. A, 2014, 2, 15303 DOI: 10.1039/C4TA02690J

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