SEMICONDUCTOR LIGHT-EMITTING ELEMENT AND MANUFACTURING METHOD FOR SEMICONDUCTOR LIGHT-EMITTING ELEMENT
To provide a semiconductor light-emitting element in which the resistance increase of a p+ GAN layer containing Mg at high concentration can be prevented and the driving voltage is reduced.SOLUTION: In a semiconductor light-emitting element 100 on a GaN substrate 110, on a first n-type GaN layer 131...
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Zusammenfassung: | To provide a semiconductor light-emitting element in which the resistance increase of a p+ GAN layer containing Mg at high concentration can be prevented and the driving voltage is reduced.SOLUTION: In a semiconductor light-emitting element 100 on a GaN substrate 110, on a first n-type GaN layer 131 with a nanowire structure, a light-emitting layer 132, a p-type GaN layer 133, a tunnel junction layer 134, and a second n-type GaN layer 140 are stacked in this order. The first n-type GaN layer includes a Si-containing GaN layer. The light-emitting layer includes a layer with an InGaN layer and a GaN layer. The p-type GaN layer includes a Mg-containing GaN layer. The tunnel junction layer includes a multilayer body in which an n+-type GaN layer 136 is stacked on a p+-type GaN layer 135. The n+-type GaN layer is an n+-type GaN sputtering film and the second n-type GaN layer includes a Si-containing GaN layer.SELECTED DRAWING: Figure 3
【課題】Mgを高濃度に含む該p+GaN層の高抵抗化を防止でき、駆動電圧が低減された半導体発光素子を提供する。【解決手段】GaN基板110上の半導体発光素子100であって、ナノワイヤ構造の第1のn型GaN層131上に、発光層132、p型GaN層133、トンネル接合層134、及び第2のn型GaN層140が、この順で積層しており、第1のn型GaN層は、Si含有GaN層からなり、発光層は、InGaN層とGaN層とを有する層からなり、p型GaN層は、Mg含有GaN層からなり、トンネル接合層は、p+型GaN層135上にn+型GaN層136が積層した積層体からなり、n+型GaN層は、n+型GaNスパッタ膜であり、第2のn型GaN層は、Si含有GaN層からなる、半導体発光素子である。【選択図】図3 |
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