Bismuth-doped semi-insulating group III nitride wafer and its production method
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United States of America Patent
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Sep 6, 2016
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May 12, 2016
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Dec 28, 2015
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Apr 7, 2006
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Abstract
The present invention discloses a semi-insulating wafer of GaxAlyIn1-x-yN (0≦x≦1, 0≦x+y≦1) which is doped with bismuth (Bi). The semi-insulating wafer has the resistivity of 104 ohm-cm or more. Although it is very difficult to obtain a single crystal ingot of group III nitride, the ammonothermal method can grow highly-oriented poly or single crystal ingot of group III nitride having the density of dislocations/grain boundaries less than 105 cm−2. The invention also disclose the method of fabricating the semi-insulating group III nitride bulk crystals and wafers.
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