Photoluminescence and Electroluminescence Properties of 2, 5-Bis[2,2′-bis (5-phenyl )- 1, 3,4-oxadiazole] Thiophene (T-OXD) and T-OXD/Poly(9-vinylcarbazole) Blends |
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作者姓名: | ZHANGZhi-ming MAYu-guang LIGuo-wen SHENjia-cong |
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作者单位: | [1]KeyLaboratoryforSupramolecularStructureandMaterialsofMinistryofEducation,JilinUniversity,Changchun130023,P.R.China [2]CollegeofChemistryandChemicalEngineering,OceanUniversityofQingdao,Qingdao266003,P.R.China |
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基金项目: | SupportedbytheNationalNaturalScienceFoundationofChina(No .2 0 2 74 0 15 ,2 0 0 0 4 0 0 4 )andResearchFundofJilinUniversity |
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摘 要: | The photoluminescence(PL) and the electroluminescence(EL) properties of a novel organic compound, 2,5-bis (2,2‘-bis(5-phenyl)-1, 3,4-oxadiazole (T-OXD), were studied in chloroform and in a solid thin film. The PL and the EL properties of T-OXD/poly(9-vinylcarbazole)(PVK) blends were also studied, which contained various contents of T-OXD. The PL maximum emission peaks of T-OXD/PVK blends show gradual bathochromtic-shift with the increase of the T-OXD content. The EL spectra of T-OXD/PVK devices are similar to their PL spectra, and all the EL maximum emission peaks show bathochromtic-shift compared with the corresponding PL spectra, which is ascribed to the formation of electroplex. The turn-on voltages for ITO/T-OXD; PVK/AI devices decreased from 13.5 V of the device cotaining 0. 1% T-OXD(mass fraction) to 5 V of the device containing 5% T-OXD, which suggests that T-OXD improves the energy level match between T-OXD and PVK and enhances the emission efficiency. The experimental results indicate that T-OXD can be used as a good electron transporting material.
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关 键 词: | 光致发光 电致发光 T-OXD 光发射二极管 |
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