Journal
CHEMPLUSCHEM
Volume 86, Issue 5, Pages 700-708Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cplu.202100012
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Funding
- Open Foundation of Key Laboratory of Multi-spectral Absorbing Materials and Structures, Ministry of Education [ZYGX2019K009-1]
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This article summarizes the recent advances in the performance of crescent-shaped Y6 and its derivatives in solar cells, focusing on crystal structure, electronic structure, and device performance. Through molecular engineering, theoretical modeling, and experimental testing, the potential applications and future developments of these non-fullerene acceptors in organic semiconductor design and mechanistic studies are explored.
The advent of crescent-shaped Y6 and its derivatives have recently enabled exceptionally high solar cell performance metrics, for structural, physical, and transport characteristics that remain poorly understood. Here we summarize recent progress on crystallography, electronic structure, and device performance of this kind of non-fullerene acceptors. First, we discuss molecular engineering and the crystal structure of Y6 and its derivatives. Second, we present theoretical modeling of the molecular orbitals, reorganization energy, and electronic couplings. Third, we summarize single carrier diode and solar cell performance, and discuss the correlations between crystal structure and computational insights. Finally, we discuss unsolved problems and future developments in this field. Overall, this Minireview summarizes crystal structure, computational understanding, and device metrics, thus providing an outlook for future organic semiconductors design and mechanistic studies in fundamental research and industrial applications.
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