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以新型环金属Ir(Ⅲ)配合物2-苯并噻吩吡啶(btp)2Ir3-乙酰基樟脑(acam)为磷光发光客体,掺杂在PVK+30%PBD主体材料中,制备了红色聚合物发光器件,同时测试了配合物在溶液中的紫外-可见光(UV-Vis)吸收光谱、光致发光(PL)光谱、PL效率、热稳定性和循环伏安曲线。结果表明,位阻基团acam的引入有效改善了配合物在溶液中的荧光光谱、量子效率。器件的测试结果显示,当掺杂浓度为5%时,电致发光(EL)光谱最大发射峰在623nm,启动电压为7.2V;在15.7V时器件最大亮度为4 127cd/m2,在11.6V时最大亮度效率为4.1cd/A,CIE色坐标值为(0.66,0.32)。
A novel ring metal Ir (Ⅲ) complex, 2-benzothienopyridine (btp) 2Ir3-acetyl camphor (acam), was doped into PVK + 30% PBD host material to prepare red polymer luminescence The UV-Vis absorption spectra, photoluminescence (PL) spectra, PL efficiency, thermal stability and cyclic voltammetry curves of the complexes in solution were also tested. The results showed that the introduction of sterically hindered acam effectively improved the fluorescence spectra and the quantum efficiency of the complex in solution. The device test results show that when the doping concentration is 5%, the maximum emission spectrum of electroluminescence (EL) spectrum is at 623nm and the starting voltage is 7.2V; the maximum brightness of the device is 4 127cd / m2 at 15.7V, When the maximum brightness efficiency of 4.1cd / A, CIE color coordinates (0.66,0.32).