采用一定比例的PVK和Alq3混合薄膜作为发光层,制备了Al /PVK∶Alq3/ ITO单层器件.利用PVK和Alq3混合薄膜的吸收光谱、激发光谱、光致发光谱、电致发光谱研究了薄膜的激发态过程,结果表明PVK和Alq3之间存在着能量传递,器件所表现的发光主要为Alq3的发光.同时利用电流电压关系、发光强度和电压的关系对器件的光电性能进行了研究, 发现Al /PVK∶Alq3/ ITO单层器件有良好的发光性能.
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