Nano-Micro Letters (Apr 2023)

Solid Additive-Assisted Layer-by-Layer Processing for 19% Efficiency Binary Organic Solar Cells

  • Guanyu Ding,
  • Tianyi Chen,
  • Mengting Wang,
  • Xinxin Xia,
  • Chengliang He,
  • Xiangjun Zheng,
  • Yaokai Li,
  • Di Zhou,
  • Xinhui Lu,
  • Lijian Zuo,
  • Zhikang Xu,
  • Hongzheng Chen

DOI
https://doi.org/10.1007/s40820-023-01057-x
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 14

Abstract

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Highlights A solid additive-assisted layer-by-layer (SAA-LBL) processing was developed to facilitate the inter-diffusion between polymer donor and acceptor and optimize the morphology of quasi-planar heterojunction for high-performance organic solar cells (OSCs). The pre-phase separation between fatty acid and polymer donor, easily tuned via controlling the cohesive energy, is critical to form the desired vertical phase-separation morphology. The SAA-LBL is generally applicable to various OSC systems, and enables the record efficiency of 19.02% among the binary OSCs.

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