Semiconductor device manufacturing: process – Formation of semiconductive active region on any substrate
Reexamination Certificate
2011-05-24
2011-05-24
Geyer, Scott B (Department: 2812)
Semiconductor device manufacturing: process
Formation of semiconductive active region on any substrate
C438S507000
Reexamination Certificate
active
07947578
ABSTRACT:
A method for fabricating a semiconductor device including: cleaning an apparatus used to grow a layer including Ga; performing a first step of forming a first layer on a substrate made of silicon by using the apparatus, the first layer including a nitride semiconductor that does not include Ga as a composition element and has a Ga impurity concentration of 2×1018atoms/cm3or less; and performing a second step of forming a second layer on the first layer by using the apparatus after the first step is repeatedly carried out multiple times, the second layer including a nitride semiconductor including Ga.
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Kouichi Tsuyoshi
Makabe Isao
Nakata Ken
Geyer Scott B
Sumitomo Electric Device Innovations, Inc.
Westerman Hattori Daniels & Adrian LLP
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