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This content will become publicly available on May 8, 2019

Title: High Performance Ternary Organic Solar Cells due to Favored Interfacial Connection by a Non-Fullerene Electron Acceptor with Cross-Like Molecular Geometry

The non-fullerene electron acceptor, TPB, exhibits a unique cross-like molecular geometry which helps it to stay preferentially at the interfaces between PTB7-Th and PC 71BM, when it is used as the third component in ternary OPV cells. The four PDI units connected to TPB's core provide multiple contact points between PTB7-Th and PC 71BM phases, thus facilitating interfacial charge extraction and improving the overall PCE to 10.6% from 9.8% after 10% TPB was added as the third component. Here, this article describes detailed experimental results and a model to explain these observations.
ORCiD logo [1] ; ORCiD logo [2] ;  [1] ;  [1] ; ORCiD logo [1] ; ORCiD logo [3] ;  [1]
  1. Univ. of Chicago, IL (United States). Dept. of Chemistry and The James Franck Inst.
  2. Univ. of Chicago, IL (United States). Dept. of Chemistry and The James Franck Inst.; Shantou Univ., Guangdong (China). Dept. of Chemistry and Key Lab. for Preparation and Application of Ordered Structural Materials of Guangdong Province
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
Publication Date:
Grant/Contract Number:
AC02-06CH11357; SC0001059
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 122; Journal Issue: 21; Journal ID: ISSN 1932-7447
American Chemical Society
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF)
Country of Publication:
United States
OSTI Identifier: