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    • 92. 发明授权
    • Light-emitting device with II-VI compounds
    • 具有II-VI化合物的发光装置
    • US5274248A
    • 1993-12-28
    • US892888
    • 1992-06-03
    • Toshiya YokogawaTadashi NarusawaMinoru Kubo
    • Toshiya YokogawaTadashi NarusawaMinoru Kubo
    • H01L33/00H01L33/06H01L33/28
    • H01L33/285B82Y20/00H01L33/0083H01L33/0087H01L33/06
    • The present invention provides a p-n junction type blue luminescence device forming a p-type hole injection layer and having high light-emission efficiency. On an n-conduction type ZnS substrate 111, there is formed a multiquantum well structure 112 alternately laminating a p-type ZnTe layer 112a and a non-doped ZnS layer 112b. And, a positive electrode 113 and a negative electrode 114 are provided on the multiquantum well structure 112 and the ZnS crystal, respectively. By applying forward bias voltage on this light-emitting device, electrons are injected from the n-type ZnS substrate to the multiquantum well structure 112. Then, these electrons are recombined with holes in the multiquantum well structure 112, so as to emit blue luminescence light. Thus, it becomes possible to easily and reproducibly obtain a p-conduction type hole injection layer so as to realize highly concentrated carrier injection and obtain high efficiency in emitting blue luminescence light.
    • 本发明提供一种形成p型空穴注入层并具有高发光效率的p-n结型蓝色发光元件。 在n导电型ZnS基板111上形成交替层叠p型ZnTe层112a和非掺杂ZnS层112b的多量子阱结构112。 并且,在多量子阱结构体112和ZnS晶体上分别设置有正极113和负极114。 通过在该发光器件上施加正向偏置电压,将电子从n型ZnS衬底注入到多量子阱结构112中。然后,这些电子与多量子阱结构112中的空穴重新结合,以发射蓝色发光 光。 因此,可以容易且可重复地获得p导电型空穴注入层,从而实现高度集中的载流子注入,并且获得发射蓝色发光的高效率。