High-efficiency and air-stable P3HT-based polymer solar cells with a new non-fullerene acceptor

Sarah Holliday (), Raja Shahid Ashraf, Andrew Wadsworth, Derya Baran, Syeda Amber Yousaf, Christian B. Nielsen, Ching-Hong Tan, Stoichko D. Dimitrov, Zhengrong Shang, Nicola Gasparini, Maha Alamoudi, Frédéric Laquai, Christoph J. Brabec, Alberto Salleo, James R. Durrant and Iain McCulloch ()
Additional contact information
Sarah Holliday: Imperial College London
Raja Shahid Ashraf: Imperial College London
Andrew Wadsworth: Imperial College London
Derya Baran: Imperial College London
Syeda Amber Yousaf: Government College University
Christian B. Nielsen: Imperial College London
Ching-Hong Tan: Imperial College London
Stoichko D. Dimitrov: Imperial College London
Zhengrong Shang: Stanford University
Nicola Gasparini: Institute of Materials for Electronics and Energy Technology (I-MEET), Friedrich-Alexander-University Erlangen-Nuremberg
Maha Alamoudi: King Abdullah University of Science and Technology (KAUST), Solar and Photovoltaics Engineering Research Center (SPERC)
Frédéric Laquai: King Abdullah University of Science and Technology (KAUST), Solar and Photovoltaics Engineering Research Center (SPERC)
Christoph J. Brabec: Institute of Materials for Electronics and Energy Technology (I-MEET), Friedrich-Alexander-University Erlangen-Nuremberg
Alberto Salleo: Stanford University
James R. Durrant: Imperial College London
Iain McCulloch: Imperial College London

Nature Communications, 2016, vol. 7, issue 1, 1-11

Abstract: Abstract Solution-processed organic photovoltaics (OPV) offer the attractive prospect of low-cost, light-weight and environmentally benign solar energy production. The highest efficiency OPV at present use low-bandgap donor polymers, many of which suffer from problems with stability and synthetic scalability. They also rely on fullerene-based acceptors, which themselves have issues with cost, stability and limited spectral absorption. Here we present a new non-fullerene acceptor that has been specifically designed to give improved performance alongside the wide bandgap donor poly(3-hexylthiophene), a polymer with significantly better prospects for commercial OPV due to its relative scalability and stability. Thanks to the well-matched optoelectronic and morphological properties of these materials, efficiencies of 6.4% are achieved which is the highest reported for fullerene-free P3HT devices. In addition, dramatically improved air stability is demonstrated relative to other high-efficiency OPV, showing the excellent potential of this new material combination for future technological applications.

Date: 2016
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DOI: 10.1038/ncomms11585

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