在薄膜电致发光中采用有机聚合物MEH-PPV和无机半导体SiO₂复合制成异质结发光器件,利用SiO₂的加速、倍增和离化的二次特性,实现了固态阴极射线发光。结构为ITO/SiO₂/MEH-PPV/SiO₂/Al的发光器件,其电致发光光谱的显著特征是有两个发光谱带。光谱中除了波长较长(峰值为583nm)的MEH-PPV的激子发光谱外,还观察到了波长较短(峰值为403nm)的蓝色发光谱,并且长短波的发光强度随着电压的不同而变化。电压较低时,只有长波光发射。当电压较高时,只有短波光存在。这种有两个谱带的发光是固态阴极射线发光的独特标志,它是一种全新的激发方式,引发出发光学中一些新而重要的问题。固态阴极射线发光理论的重要方面之一就是SiO2₂是下的二次特性。文章研究了固态阴极射线发光动力学问题,高电场下SiO₂二次特性及厚度对二次特性的影响。

For electricity induced luminescence of thin film, the heterojunction luminescence devices were produced by compounding the organic polymer of MEH-PPV and inorganic semiconductor SiO₂. Utilizing the super liner characteristic of SiO₂as acceleration, multiplication and ionization, the solid-state cathodoluminescence was real-ized. The obvious feature of electroluminescence in the luminescence device withITO/SiO₂/MEH-PPV/SiO₂/Al is that it has two spectral bands. In the electroluminescence spectra, the authors obtained both blue emission(403nm)and excition luminescence(583nm)of MEH-PPV and the intensity of the long and short wave peak changing with the voltage. Only long wave peak is observed when the voltage is low and only shor twave peak appears when the voltage is high. It is the typical feature that the solid-state cathodoluminescence has two spectral bands. It is a new light emission, which has new mechanism and is important for the luminescence. One of the important aspects of the solid state cathodoluminescence theory is the super liner characteristic of SiO₂. In the present paper, the luminescence dynamics of solid-state cathodoluminescence, the super liner characteristic of SiO₂in the higher electric field and the influences of thickness on it were studied.