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High-efficiency non-fullerene organic solar cells enabled by a difluorobenzothiadiazole-based donor polymer combined with a properly matched small molecule acceptor

  • Jingbo Zhao*
  • , Yunke Li
  • , Haoran Lin
  • , Yuhang Liu
  • , Kui Jiang
  • , Cheng Mu
  • , Tingxuan Ma
  • , Joshua Yuk Lin Lai
  • , Huawei Hu
  • , Demei Yu
  • , He Yan*
  • *Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Here we report high-performance small molecule acceptor (SMA)-based organic solar cells (OSCs) enabled by the combination of a difluorobenzothiadiazole donor polymer named PffBT4T-2DT and a SMA named SF-PDI2. It is found that SF-PDI2 matches particularly well with PffBT4T-2DT and non-fullerene OSCs with an impressive VOC of 0.98 V, and a high power conversion efficiency of 6.3% is achieved. Our study shows that PffBT4T-2DT is a promising donor material for SMA-based OSCs, and the selection of a matching SMA is also important to achieve the best OSC performance.

Original languageEnglish
Pages (from-to)520-525
Number of pages6
JournalEnergy & Environmental Science
Volume8
Issue number2
Online published30 Oct 2014
DOIs
Publication statusPublished - 1 Feb 2015
Externally publishedYes

Funding

The work described in this paper was partially supported by the National Basic Research Program of China (973 Program; 2013CB834701), the Hong Kong Innovation and Technology Commission (ITS/354/12), the Hong Kong Research Grants Council (T23-407/13N, N_HKUST623/13, and 606012) and the National Science Foundation of China (#21374090).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Research Keywords

  • POWER CONVERSION EFFICIENCY
  • CHARGE RECOMBINATION
  • PROCESSING ADDITIVES
  • HIGH-PERFORMANCE
  • DIIMIDES
  • PHOTOVOLTAICS

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