The synthesis, structure, and properties of 5,6,11,12-tetraarylindeno[1,2-b]fluorenes and their applications as donors for organic photovoltaic devices

Yuan-Chih Lo, Hao-Chun Ting, Ya-Ze Li, Yi-Hua Li, Shun-Wei Liu, Kuo-Wei Huang, Ken-Tsung Wong

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The synthesis, structure, and properties of three new 5,6,11,12-tetraarylindeno[1,2-b]fluorenes are reported. The highly twisted conformations between an indeno[1,2-b]fluorene core and peripheral aryl substitutions endow these indeno[1,2-b]fluorene derivatives with good photostability for use as electron donors for vacuum-deposited photovoltaic devices. The optimized device based on a TAInF2 donor blended with C70 as an electron acceptor produces a high open-circuit voltage (>0.9 V) and a power conversion efficiency of 2.91%. This work demonstrates the first application of an indenofluorene derivative as an electron donor in organic solar cells.
Original languageEnglish (US)
Pages (from-to)675-681
Number of pages7
JournalOrg. Chem. Front.
Volume4
Issue number5
DOIs
StatePublished - 2017

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