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Adv Mater. 2015 Jun 03;27(21):3266-72. doi: 10.1002/adma.201500577. Epub 2015 Apr 20.

Fine-Tuning the 3D Structure of Nonfullerene Electron Acceptors Toward High-Performance Polymer Solar Cells.

Advanced materials (Deerfield Beach, Fla.)

Haiyan Li, Ye-Jin Hwang, Brett A E Courtright, Frank N Eberle, Selvam Subramaniyan, Samson A Jenekhe

Affiliations

  1. Department of Chemical Engineering and Department of Chemistry, University of Washington, Seattle, WA, 98195-1750, USA.

PMID: 25899623 DOI: 10.1002/adma.201500577

Abstract

Arylene linkers in a series of new tetraaza-benzodifluoranthene diimide dimers enable tuning of the 3D molecular structure of nonfullerene electron acceptors, facilitating observation of dramatic variation of the power conversion efficiency from 2.6% to 6.4% as the twist angle between the monomeric building blocks in the dimer is varied.

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Keywords: 3D structures; n-type organic semiconductors; nonfullerene electron acceptors; polymer solar cells; tetraazabenzodifluoranthene diimide

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