中文摘要：

将高量子效率的磷光材料fac—tris-2-phenylpyridine iridium（Ⅲ）（Ir（ppy）3）按不同的比例掺杂到具有栽流子传输能力的主体材料poly（N—vinylcarbazole）（PVK）中作为发光层制备磷光电致发光器件。通过对器件发光机制的研究，发现光致发光过程中起主导作用的是Foster能量转移机制；而在电致发光过程中，器件的发光性能受Dexter能量转移和电荷陷获2种能量传递形式的影响。器件的I-V-L特性表明：Ir（ppy）3的掺杂比例为5%时，器件的光功率效率最大，能量转移最充分。

英文摘要：

The phosphorescent electroluminescent devices were developed by doping different proportions of fac-tris-2-phenylpyridine iridium （Ⅲ） （Ir（ppy）3） into PVK as a light-emitting layer. Through the research of the luminescence mechanism, it is found that in the process of photoluminescence （PL）, Foster energy transfer mechanism plays a dominant role, and in the process of electroluminescence （EL）, the two types of energy transfers as Dexter energy transfer and charge trapping affect the luminescence performance. The I-V-L characteristic of the device shows that the light-power efficiency is highest and the energy transfer is the most efficient when the doping proportion of Ir（ppy）3 is 5%.