TFEL系统中一种新的发光现象

A KIND OF NEW ELECTROLUMINESCENCE PHENOMENON IN TFEL DEVICE

在我们的实验中发现ＴＦＥＬ器件中有一种新的发光现象。在一定工艺条件下制成ＺｎＳ：ＥｒＦ３的样品中有两次亮度跃升。在第二次亮度跃升中器件的光谱发生明显的变化．Ｅｒ３＋的５２８５的绿光在第二次跃升中变化两个数量级，而兰光和红光却没有发生这种突变，我们认为这种第二次突变可能与在高场下ＥＬ中有较多电子达到较大能量有关。

A new kind of EL phenomenon in TFEL divices is studied.In ZnS: ErF3 sam-ples made by special method, there are two sudden increases of brightness. In second in-crease of brightness, the peak intensity at 5285 of Er3+ increases about two order ofmagnitude, but there is no increase for blue:and red radiation.