Deep level transient spectroscopic studies of MOCVD GaN layers grown on sapphire

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作者
Sliwinski, AA
Korona, KP
Pakula, K
Baranowski, JM
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O4 [物理学];
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0702 ;
摘要
The deep level transient spectroscopy of GaN heteroepitaxial layers grown on sapphire was studied. The samples were Mg doped during the growth. The as-grown material is n-type. It becomes p-type after annealing. The samples were measured in the temperature range from 77 K to 420 K. In n-type GaN, one peak (EG1) with activation energy 0.75 eV was detected. In p-type, at least three peaks were observed: AS1 at temperature about 300 K and AS2, AS3 at about 400 K. The dominating one is AS3. It has an activation energy about 1.1 eV.
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页码:955 / 958
页数:4
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