宽谱带 meaning in English

broad band

Using the typical moled structure glass / dbr / ito / htl / eml （ etl ） / al ， the el spectrum narrowing , intensity enhancement in the normal direction as well as emission intensity redistribution in space are observed . by the introduction of single layer silver film instead of the dbr / ito multilayer , a ( / 2 - length cavity is obtained . using this kind of microcavity , three - color single mode pl from a single material alq and three - color single mode el from double layers pvk / alq are achieved for the first time
通过以金属银替代多层结构的dbr / ito ，既作为反射镜，又作为el器件中的空穴注入电极，设计出腔长只有( / 2的超短微腔，采用同一种宽谱带材料alq作为光发射层，首次报道了三基色单模光致发光和pvk / alq双层结构的三基色单模电致发光。