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采用N,N′-diphenyl-N,N′-bis(1-naphthyl-pheny1)-1,1′-biphenyl-4,4′-diamine(NPB):4,4′-N,N′-dicarbazole-biphenyl(CBP)掺杂体系为复合空穴传输层,制备了结构为indium-tin oxide(ITO)/NPB:CBP/CBP:bis[2-(4-tert-butylphenyl)benzothiazolato-N,C2′]iridium(acetylacetonate)[(t-bt)2Ir(acac)]/2,9-dimethyl-4,7-diphenyl-phenanthroline(BCP)/Mg:Ag的黄色有机电致发光器件(organic light-emitting devices,OLEDs).通过调节NPB:CBP掺杂体系的组分,研究了不同掺杂质量比的OLEDs的电致发光特性.结果表明,将CPB掺杂到NPB中可调控空穴的传输能力,对器件的发光效率有显著的影响.当NBP和CPB的质量比为1∶3时,器件的的性能得到最大限度的优化,最大功率效率达到18.1lm/W.
N, N’-diphenyl-N, N’-bis (1-naphthyl-pheny1) -1,1’-biphenyl-4,4’-diamine (CBP) -biphenyl (CBP) doped system as a hole-transport layer was prepared, and the structure of indium-tin oxide (ITO) / NPB: CBP / CBP: bis [2- ] yellow organic electroluminescent device (iridium (acetylacetonate) [(t-bt) 2Ir (acac)] / 2,9-dimethyl-4,7-diphenyl-phenanthroline (BCP) / Mg: Ag , OLEDs) .Electroluminescent properties of OLEDs with different doping mass ratios were studied by adjusting the composition of NPB: CBP doping system.The results showed that the doping of CPB into NPB can regulate the hole transporting ability, The luminous efficiency of the device has a significant impact.When NBP and CPB mass ratio of 1: 3, the device performance is optimized to maximize the maximum power efficiency of 18.1lm / W.