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EL是什么东东啊

作者:大山发布时间:2023-02-26浏览:462


EL是电致发光片的英文缩写,( electroluminescence)

Electroluminescence means luminescence produced by high energy generated from electrons which are accelerated within phosphors when an alternating current is applied to a luminous layer consisting of phosphor powder.

EL element is largely divided into two types; dispersion-type EL with luminous layer consisting of phosphors and thin film-type EL consisting of dense thin films. Each EL is also subdivided into alternating current type and direct current type according to driving method.

电致发光片是将发光粉置于两个平板电极之间而构成的。其为夹层式结构, 上下各有一个电极,上电极为透明导电膜(ITO膜),光从此面射出,下电极为背电极,其材料主要为银或碳,发光材料主要是硫化锌(ZnS),当交流电压加在两个电极上时,电场使得(ZnS)粒子产生激发式跃迁,从而在每一个充放循环中发光, 当它含有不同的激活剂时,可发出不同颜色的光。EL的亮度随电极间的电压、频率的改变而变化,一般情况下随电压及频率的增加亮度也相应增加。


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