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对 PVK在电场调制下的光致发光现象进行了研究。发现在高场下光致发光强度会减弱 ,且存在一个阈值 ;在阈值以下发光强度随电压增加缓慢减弱 ,在域值以上则出现发光强度迅速减弱的趋势
The photoluminescence of PVK under electric field modulation was studied. It is found that the photoluminescence intensity will be weakened in high field, and there is a threshold value. Below the threshold value, the luminescence intensity will slowly decrease with the increase of the voltage. Above the threshold value, the luminescence intensity tends to weaken rapidly