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    • 9. 发明授权
    • Electrode for light-emitting semiconductor devices
    • 用于发光半导体器件的电极
    • US06403987B1
    • 2002-06-11
    • US09694325
    • 2000-10-24
    • Hisayuki MikiTakashi UdagawaNoritaka MurakiMineo Okuyama
    • Hisayuki MikiTakashi UdagawaNoritaka MurakiMineo Okuyama
    • H01L3300
    • H01L33/42H01L33/32H01L33/38H01L33/40H01L2924/0002H01L2924/01005H01L2924/01012H01L2924/01015H01L2924/01022H01L2924/01024H01L2924/01027H01L2924/01028H01L2924/01029H01L2924/0103H01L2924/01046H01L2924/0105H01L2924/01078H01L2924/01079H01L2933/0016H01L2924/00
    • An electrode for a light-emitting semiconductor device includes a light-permeable electrode formed to come into contact with the surface of the semiconductor, and a wire-bonding electrode that is in electrical contact with the light-permeable electrode and is formed to come into partial contact with the surface of the semiconductor with at least a region in contact with the semiconductor having a higher contact resistance per unit area with respect to the semiconductor than a region of the light-permeable electrode in contact with the semiconductor. This device electrode is formed by forming a wire-bonding electrode on a portion of the surface of a p-type GaN-base compound semiconductor, forming on the surface of the semiconductor a first layer that is of at least one member selected from the group consisting of Au, Pt and Pd and is formed to overlay the upper surface of the wire-bonding electrode at a portion at which the wire-bonding electrode is located, forming on the first layer a second layer that is of at least one metal selected from the group consisting of Ni, Ti, Sn, Cr, Co, Zn, Cu, Mg and In, and forming a light-permeable electrode by heat-treating the first and second layers in an atmosphere that contains oxygen.
    • 用于发光半导体器件的电极包括形成为与半导体的表面接触的透光电极和与透光电极电接触并形成的导线接合电极 与半导体的表面部分接触,至少与半导体接触的区域相对于半导体具有比单位面积的接触电阻高于与半导体接触的透光性电极的区域。 该器件电极通过在p型GaN基化合物半导体的表面的一部分上形成引线键合电极而形成,在半导体的表面上形成第一层,该第一层为选自以下的至少一种: 由Au,Pt和Pd组成,并且形成为在引线接合电极所在的部分处覆盖引线接合电极的上表面,在第一层上形成至少一种选择的金属的第二层 从由Ni,Ti,Sn,Cr,Co,Zn,Cu,Mg和In组成的组中,通过在包含氧的气​​氛中对第一层和第二层进行热处理而形成透光性电极。