Rigid Nonfullerene Acceptors Based on Triptycene-Perylene Dye for Organic Solar Cells

Dong Meng; Huiting Fu; Bingbing Fan; Jianqi Zhang; Yan Li; Yanming Sun; Zhaohui Wang

doi:10.1002/asia.201700440

Rigid Nonfullerene Acceptors Based on Triptycene-Perylene Dye for Organic Solar Cells

Chem Asian J. 2017 Jun 19;12(12):1286-1290. doi: 10.1002/asia.201700440. Epub 2017 May 15.

Authors

Dong Meng^{1

2}, Huiting Fu^{1

2}, Bingbing Fan³, Jianqi Zhang⁴, Yan Li¹, Yanming Sun³, Zhaohui Wang¹

Affiliations

¹ Key Laboratory of Organic Solids, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
² University of Chinese Academy of Sciences, Beijing, 100049, China.
³ Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing, 100191, China.
⁴ National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing, 100190, China.

PMID: 28422433
DOI: 10.1002/asia.201700440

Abstract

Three kinds of nonconjugated rigid perylene bisimide (PBI) derivatives based on a triptycene core were designed, synthesized and characterized. The unique three-dimensional (3D) conformation of triptycene could enable formation of polymer with the favorable morphology for organic polymer solar cells (PSCs) by relieving the self-aggregation of rigid PBI units. The low-lying LUMO energy levels of these compounds demonstrated that they are very suitable for use as acceptors in organic solar cells. A higher power conversion efficiency (PCE) of 6.15 % was obtained for the blend film using the compound with two PBI units (T-2) as the acceptor and commercial poly[[4,8-bis[5-(2-ethylhexyl)thiophene-2-yl]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)-carbonyl]thieno[3,4-b]thiophenediyl]] (PCE-10) as the electron donor.

Keywords: nonfullerene acceptor; organic solar cell; perylene bisimide; rigid nonconjugated structure; triptycene.