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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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Twisted Linker Effect on Naphthalene Diimide-Based Dimer Electron Acceptors for Non-fullerene Organic Solar Cells

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Title
Twisted Linker Effect on Naphthalene Diimide-Based Dimer Electron Acceptors for Non-fullerene Organic Solar Cells
Author
Oh, Jae TaekHa, Yeon HeeKwon, Soon-KiSong, SeyeongKim, Jin YoungKim, Yun-HiChoi, Hyosung
Keywords
Naphthalene diimide;  non‐ fullerene acceptors;  organic solar cells;  twisted linkers
Issue Date
ACCEPT
Publisher
WILEY-V C H VERLAG GMBH
Citation
MACROMOLECULAR RAPID COMMUNICATIONS, v., no., pp. -
Abstract
Naphthalene diimide (NDI) dimers, NDI-Ph-NDI with a phenyl linker and NDI-Xy-NDI with a xylene linker, are designed and synthesized. The influence of the xylene and phenyl linkers on optical properties, electrochemical properties, morphology, and device performance is systematically investigated. Non-fullerene organic solar cells (OSCs) with NDI-Ph-NDI show poor device efficiency due to aggregation of polymer chains and/or NDI dimers caused by the highly planar structure of NDI-Ph-NDI. Although NDI-Xy-NDI is a non-planar structure, uniform surface morphology and weak bimolecular recombination lead to high power conversion efficiencies of 3.11%, which is the highest value in non-fullerene OSCs with NDI small molecules.
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DOI
http://dx.doi.org/10.1002/marc.201800108
ISSN
1022-1336
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ECHE_Journal Papers
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