频控变色场致发光器件及机理研究

吸收是发光的前提条件，吸收变了发光的其他特性也会跟着改变。发光寿命长短又会反过来影响吸收的多少，这不仅存在于光致发光中，而且是一个普遍规律。作者从电场引起的场致发光中发现，在同一种材料中掺入两种发光寿命长短相差悬殊的发光中心Cu，Mn，利用激发电源频率的变化明显地显示出器件发光光谱的变化，在一种材料中实现了变色。实验结果证明提高激发频率可以提高短寿命发光中心的激发效率，通过改变激发频率的大小，就可以在掺有两种发光寿命大小不一的材料中实现了发光颜色的变化，这个规律只与发光中心寿命有关，而与激发方式及猝灭原因无关。

Study of Color-Changing Device Controlled by Frequency and Its Mechanism

Absorption is the underlying reason for the change in luminescence traits. And the lifetime influences the absorption in turn. This is a common law not only suitable for photoluminescence but also for other types of luminescence. In field emission display, two kinds of luminescence center have dramatically dissimilar lifetimes, which are co-doped in the same material. The spectrum changes with excitation frequency. Tuning color comes into reality in the same materials, The experiment proves that this law has something to do with lifetime, but has nothing to do with the way of excitation and the reasons for abruptly quenching.