Fullerene-Free Organic Solar Cells with an Efficiency of 10.2% and an Energy Loss of 0.59 eV Based on a Thieno[3,4-c]Pyrrole-4,6-dione-Containing Wide Band Gap Polymer Donor

Wisnu Tantyo Hadmojo, Febrian Tri Adhi Wibowo, Du Yeol Ryu, In Hwan Jung, Sung Yeon Jang

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Although the combination of wide band gap polymer donors and narrow band gap small-molecule acceptors achieved state-of-the-art performance as bulk heterojunction (BHJ) active layers for organic solar cells, there have been only several of the wide band gap polymers that actually realized high-efficiency devices over >10%. Herein, we developed high-efficiency, low-energy-loss fullerene-free organic solar cells using a weakly crystalline wide band gap polymer donor, PBDTTPD-HT, and a nonfullerene small-molecule acceptor, ITIC. The excessive intermolecular stacking of ITIC is efficiently suppressed by the miscibility with PBDTTPD-HT, which led to a well-balanced nanomorphology in the PBDTTPD-HT/ITIC BHJ active films. The favorable optical, electronic, and energetic properties of PBDTTPD-HT with respect to ITIC achieved panchromatic photon-to-current conversion with a remarkably low energy loss (0.59 eV).

Original languageEnglish
Pages (from-to)32939-32945
Number of pages7
JournalACS Applied Materials and Interfaces
Volume9
Issue number38
DOIs
Publication statusPublished - 2017 Sep 27

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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