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Achieving Efficient Thick Film All-polymer Solar Cells Using a Green Solvent Additive

  • Zhen-Ye Li
  • Wen-Kai Zhong
  • Lei YingEmail author
  • Ning Li
  • Feng Liu
  • Fei HuangEmail author
  • Yong Cao
Article

Abstract

Advances in organic photovoltaic technologies have been geared toward industrial high-throughput printing manufacturing, which requires insensitivity of photovoltaic performance regarding to the light-harvesting layer thickness. However, the thickness of light-harvesting layer for all polymer solar cells (all-PSCs) is often limited to about 100 nm due to the dramatically decreased fill factor upon increasing film thickness, which hampers the light harvesting capability to increase the power conversion efficiency, and is unfavorable for fabricating large-area devices. Here we demonstrate that by tuning the bulk heterojunction morphology using a non-halogenated solvent, cyclopentyl methyl ether, in the presence of a green solvent additive of dibenzyl ether, the power conversion efficiency of all-PSCs with photoactive layer thicknesses of over 500 nm reached an impressively high value of 9%. The generic applicability of this green solvent additive to boost the power conversion efficiency of thick-film devices is also validated in various bulk heterojunction active layer systems, thus representing a promising approach for the fabrication of all-PSCs toward industrial production, as well as further commercialization.

Keywords

Thick-film all-polymer solar cell Green solvent additive Dibenzyl ether 

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Notes

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (No. 21822505, 91633301, 51673069, and 21520102006), Program for Science and Technology Development of Dongguan (No. 2019622163009), and the Dongguan Innovative Research Team Program (No. 2018607201002). Portions of this research used the resources of beamline 7.3.3 and 11.0.1.2 at Advanced Light Source, Materials Science Division, The Molecular Foundry, Lawrence Berkeley National Laboratory, which was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

Supplementary material

10118_2020_2356_MOESM1_ESM.pdf (606 kb)
Achieving Efficient Thick Film All-polymer Solar Cells Using a Green Solvent Additive

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Copyright information

© Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhouChina
  2. 2.South China Institute of Collaborative InnovationDongguanChina
  3. 3.Institute of Materials for Electronics and Energy Technology (i-MEET)FAU Erlangen-NürnbergErlangenGermany
  4. 4.Department of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina

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