METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE

To form a p-type semiconductor region in a gallium nitride (GaN) based semiconductor by ion implantation.SOLUTION: A method for manufacturing a semiconductor device comprises a first groove forming step, a depositing step, and an ion implanting step. The first groove forming step forms a first groov...

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Hauptverfasser: NIWA SHIGEKI, FUJII TAKAHIRO, OZAKI MASAYOSHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To form a p-type semiconductor region in a gallium nitride (GaN) based semiconductor by ion implantation.SOLUTION: A method for manufacturing a semiconductor device comprises a first groove forming step, a depositing step, and an ion implanting step. The first groove forming step forms a first groove in a first semiconductor layer in which a bottom is located for a laminate including a gallium nitride (GaN) based first semiconductor layer containing an n-type impurity and a gallium nitride (GaN) based second semiconductor layer laminated in the first semiconductor layer and containing a p-type impurity. The depositing step deposits the p-type impurity on a side part and the bottom of the first groove. The ion implanting step implants the p-type impurity into the first semiconductor layer via the first groove.SELECTED DRAWING: Figure 2 【課題】窒化ガリウム(GaN)系の半導体に、イオン注入によってp型半導体領域を形成する。【解決手段】半導体装置の製造方法は、n型不純物を含有する窒化ガリウム(GaN)系の第1半導体層と、第1半導体層に積層され、p型不純物を含有する窒化ガリウム(GaN)系の第2半導体層とを含む積層体に対し、第1半導体層内に底部が位置する第1溝部を形成する、第1溝部形成工程と、第1溝部の側部及び底部にp型不純物を堆積させる堆積工程と、第1溝部を介して、p型不純物を第1半導体層にイオン注入する、イオン注入工程と、を備える。【選択図】図2