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首页> 外文期刊>Advanced Functional Materials >White-Light-Emitting Diodes Based on Indium Complexes via Efficient Energy Transfer from a Conjugated Polymer
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White-Light-Emitting Diodes Based on Indium Complexes via Efficient Energy Transfer from a Conjugated Polymer

机译：通过共轭聚合物的有效能量转移，基于铟配合物的白光发光二极管

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摘要

Efficient white-light-emitting diodes (WLEDs) have been developed using a polyfluorene-type blue-emitting conjugated polymer doped with green and red phosphorescent dyes. The emission spectrum of the conjugated polymer, which has a very high luminescent efficiency, shows a large spectral overlap with the absorbance of green and red iridium complexes. Also, efficient energy transfer from the conjugated polymer to the iridium complexes is observed. Poly(N-vinyl carbazole) is used to improve the miscibility between conjugated polymer and iridium complexes because of their poor chemical compatibility and phase separation. A white emission spectrum is easily obtained by varying the contents of the three materials and controlling the phase morphology. Moreover, these WLEDs show a voltage-independent electroluminescence owing to the threshold and driving voltage of the three materials being similar as a result of energy transfer.
机译：使用掺杂有绿色和红色磷光染料的聚芴型发蓝色光的共轭聚合物，已经开发出了高效的白光发光二极管（WLED）。具有非常高的发光效率的共轭聚合物的发射光谱显示出与绿色和红色铱络合物的吸光度大的光谱重叠。同样，观察到从共轭聚合物到铱配合物的有效能量转移。聚（N-乙烯基咔唑）由于其较差的化学相容性和相分离性而用于改善共轭聚合物和铱配合物之间的混溶性。通过改变三种材料的含量并控制相形态可以轻松获得白色发射光谱。此外，由于能量传输的结果，这三种材料的阈值和驱动电压相似，因此这些WLED显示出与电压无关的电致发光。

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