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Proceedings Article

Plastic solar cells: breaking the 10% commercialization barrier

[+] Author Affiliations
Letian Dou, Jingbi You, Chun-Chao Chen, Gang Li, Yang Yang

Univ. of California, Los Angeles (United States)

Proc. SPIE 8477, Organic Photovoltaics XIII, 847702 (September 25, 2012); doi:10.1117/12.930410
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From Conference Volume 8477

  • Organic Photovoltaics XIII
  • Zakya H. Kafafi; Christoph J. Brabec; Paul A. Lane
  • San Diego, California, USA | August 12, 2012

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. © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Letian Dou ; Jingbi You ; Chun-Chao Chen ; Gang Li and Yang Yang
" Plastic solar cells: breaking the 10% commercialization barrier ", Proc. SPIE 8477, Organic Photovoltaics XIII, 847702 (September 25, 2012); doi:10.1117/12.930410; http://dx.doi.org/10.1117/12.930410


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