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DCJTB, a dicyanomethylene-4H-pyran (DCM) derivative, is one of the most promising dopant materials. It has been widely used in red and white OLEDs.
With four methyl bulky substituents on the julolidine moiety, and tert-butyl group on the pyran moiety of DCM backbone stucture, DCJTB can efficiently prevent concentration quenching between the emitting materials, which leads to improved device electroluminescence efficiencies.
DCJTB has also been used as an interface material between the dye and acceptor in small molecule organic heterojunction solar cells, retarding the charge recombinations between the donor and the acceptor.
Highly efficient red OLEDs using DCJTB as the dopant and delayed fluorescent exciplex as the host, B. Zhao et al., Sci. Rep., 5, 10697 (2015); DOI: 10.1038/srep10697.
Simple structured hybrid WOLEDs based on incomplete energy transfer mechanism: from blue exciplex to orange dopant, T. Zhang et al., Sci. Rep., 5, 10234 (2015); DOI: 10.1038/srep10234.
Triplet exciton harvesting by multi-process energy transfer in fluorescent organic light-emitting diodes, D. Li et al., J. Mater. Chem. C, 7, 977 (2019); DOI: 10.1039/c8tc05141k.
Development of a Highly Efficient Hybrid White Organic-LightEmitting Diode with a Single Emission Layer by Solution Processing, J. Wu et al., ACS Appl. Mater. Interfaces, 10, 4851−4859 (2018); DOI: 10.1021/acsami.7b14695.
Simultaneous enhancement of photo- and electroluminescence in white organic light emitting devices by localized surface plasmons of silver nanoclusters, J. Yu et al., Nanotechnology 28, 085206 (2017); doi:10.1088/1361-6528/aa56e3.
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