Simultaneous spin-coating and solvent annealing: Manipulating the active layer morphology to a power conversion efficiency of 9.6% in polymer solar cells

He, Zhicai; Liu, Feng; Wang, Cheng; Chen, Jihua; He, Lilin; Nordlund, Dennis; Wu, Hongbin; Russell, Thomas P.; Cao, Yong

doi:10.1039/C5MH00076A

Title: Simultaneous spin-coating and solvent annealing: Manipulating the active layer morphology to a power conversion efficiency of 9.6% in polymer solar cells

Journal Article · Thu Aug 20 00:00:00 EDT 2015 · Materials Horizons

DOI:https://doi.org/10.1039/C5MH00076A· OSTI ID:1319225

He, Zhicai ^[1]; Liu, Feng ^[2]; Wang, Cheng ^[3]; Chen, Jihua ^[4]; He, Lilin ^[4]; Nordlund, Dennis ^[5]; Wu, Hongbin ^[1]; Russell, Thomas P. ^[6]; Cao, Yong ^[1]

South China Univ. of Technology, Guangzhou (People's Republic of China)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Massachusetts, Amherst, MA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of Massachusetts, Amherst, MA (United States); Tokoku Univ., Aoba (Japan)

Here, we developed a simultaneous spin-coating/solvent-annealing process and demonstrated morphology optimization for PTB7 based organic photovoltaics. This novel processing method enhances the edge-on crystalline content in thin films and induces the formation of weak PCBM aggregates. As a result, the efficiency of polymer solar cells increased from 9.2% to a certified high efficiency of 9.61%, owing to an enhanced short-circuit current (J_sc, 18.4 mA cm^–2vs. 17. 5 mA cm^–2) and an improved fill factor.

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Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Polymer-Based Materials for Harvesting Solar Energy (PHaSE); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1319225

Journal Information:: Materials Horizons, Vol. 2, Issue 6; ISSN 2051-6347

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 33 works

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Dual-grating-induced light harvesting enhancement in organic solar cells Zhang, Yue-Xing; Gao, Chen; Chen, Jing-De Journal of Materials Chemistry A, Vol. 6, Issue 25 https://doi.org/10.1039/c8ta03526a	journal	January 2018
Deconstructing the behavior of donor–acceptor copolymers in solution & the melt: the case of PTB7 Ryno, Sean M.; Risko, Chad Physical Chemistry Chemical Physics, Vol. 21, Issue 15 https://doi.org/10.1039/c9cp00777f	journal	January 2019
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