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    • 7. 发明授权
    • Light-emitting semiconductor device using group III nitride compound
    • 使用III族氮化物化合物的发光半导体器件
    • US06645785B2
    • 2003-11-11
    • US09909895
    • 2001-07-23
    • Masayoshi KoikeShinya Asami
    • Masayoshi KoikeShinya Asami
    • H01L2100
    • H01L33/325B82Y20/00H01L33/06
    • An emission layer (5) for a light source device is formed to have a multi-layer structure, doped with an acceptor and a donor impurity. The multi-layer structure may include a quantum well (QW) structure or a multi quantum well (MQW) structure (50). With such a structure, a peak wavelength of the light source can be controlled, because the distances between atoms of the acceptor and the donor impurities are widened. Several arrangements can be made by, e.g., altering the thickness of each composite layer of the multi-layer structure, altering their composition ratio, forming undoped layer 5 between the impurity doped layers, and so forth. Further, luminous intensity of ultra violet color can be improved, because doping the donor impurity and the acceptor impurity realizes a donor-acceptor emission mechanism and abundant carriers. Several arrangements can be made by, e.g., optimizing the materials of the composite layers, optimizing their composition ratios, optimizing their lattice constants, and so forth to further enhance the luminous intensity of the light source.
    • 用于光源器件的发射层(5)形成为具有掺杂有受主和施主杂质的多层结构。 多层结构可以包括量子阱(QW)结构或多量子阱(MQW)结构(50)。 通过这样的结构,可以控制光源的峰值波长,因为受主的原子与供体杂质之间的距离变宽。 可以通过例如改变多层结构的每个复合层的厚度,改变它们的组成比,在杂质掺杂层之间形成未掺杂的层5等来进行几种布置。 此外,可以提高紫外线的发光强度,因为掺杂施主杂质和受主杂质实现了供体 - 受体发射机制和丰富的载体。 可以通过例如优化复合层的材料,优化其组成比,优化其晶格常数等来进行若干布置,以进一步增强光源的发光强度。