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Issue 43, 2016
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Highly efficient organic light emitting diodes based on a D–A–D type dibenzothiophene derivative exhibiting thermally activated delayed fluorescence with small ΔEST

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Abstract

A new D–A–D type TADF material, namely DPAC–DBTDO, is constructed using 9,9-diphenyl-9,10-dihydroacridine as an electron donor and dibenzo[b,d]thiophene-5,5-dioxide as an electron acceptor. DPAC–DBTDO possesses a very small ΔEST of 0.10 eV between S1 and T1, which is the lowest value among DBTDO-derivatives. DPAC–DBTDO exhibits nearly 100% solid-state efficiency. A high external quantum efficiency of 13.1% is also achieved in multi-layered OLEDs.

Graphical abstract: Highly efficient organic light emitting diodes based on a D–A–D type dibenzothiophene derivative exhibiting thermally activated delayed fluorescence with small ΔEST

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Publication details

The article was received on 05 Aug 2016, accepted on 06 Oct 2016 and first published on 06 Oct 2016


Article type: Communication
DOI: 10.1039/C6TC03382B
Citation: J. Mater. Chem. C, 2016,4, 10205-10208
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    Highly efficient organic light emitting diodes based on a D–A–D type dibenzothiophene derivative exhibiting thermally activated delayed fluorescence with small ΔEST

    X. He, T. Shan, X. Tang, Y. Gao, J. Li, B. Yang and P. Lu, J. Mater. Chem. C, 2016, 4, 10205
    DOI: 10.1039/C6TC03382B

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