简介：Novelmolecularmaterial,1-benzothiazoly-3-pheny1-pyrazoline(BTPP)wasfoundtofunctionasbrightbluelightemittingdyeinorganicelectroluminescentdevice,anditsopticalandelectriccharacteristicswereinvestigated.Thisheterovycliccompoundexhibitedgoodcharacteristicsofbluephotoluminescenceandelectroluminescence,whichhadtheemissionpeakat450nm.Thesinglelayerlight-emittingdevicesusingBTPPaslight-emittingmaterialdispersedinpoly(N-vinylcarbazole)(PVK)anddoublelayeronesusingPBDasholeblocklayerabovethelight-emittinglayerwerefabricatedusingconventionalspin-castingandvaccumvapourdepositionmethods.TheintroductionofPBDhasenhancedelectroninjectionandluminanceefficiency,comparedwiththesinglelayerLEDs.
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