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Proceedings Paper

Plastic solar cells: breaking the 10% commercialization barrier
Author(s): Letian Dou; Jingbi You; Chun-Chao Chen; Gang Li; Yang Yang
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Paper Abstract

Tandem solar cells provide an effective way to harvest a broader spectrum of solar radiation by combining two or more solar cells with different absorption ranges. However, for polymer solar cells (PSCs), the performance of tandem devices lags behind single-layer cells mainly due to the lack of a high-performance low-bandgap polymer with appropriate spectral response range. Here, we demonstrate a novel low bandgap conjugated polymer (~1.44 eV) specifically suitable for tandem structure. In the single-layer device, power conversion efficiency (PCE) of 6.5% was achieved. When the polymer was applied to tandem solar cells, we demonstrated a NREL certified PCE of 8.62%[1] . Further optimization on materials and devices of this system has lead to record breaking efficiency of 10.6%. Furthermore, the tandem devices show excellent stability due both to the intrinsic stability of the polymer and the advanced device structure.

Paper Details

Date Published: 25 September 2012
PDF: 4 pages
Proc. SPIE 8477, Organic Photovoltaics XIII, 847702 (25 September 2012); doi: 10.1117/12.930410
Show Author Affiliations
Letian Dou, Univ. of California, Los Angeles (United States)
Jingbi You, Univ. of California, Los Angeles (United States)
Chun-Chao Chen, Univ. of California, Los Angeles (United States)
Gang Li, Univ. of California, Los Angeles (United States)
Yang Yang, Univ. of California, Los Angeles (United States)

Published in SPIE Proceedings Vol. 8477:
Organic Photovoltaics XIII
Zakya H. Kafafi; Christoph J. Brabec; Paul A. Lane, Editor(s)

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