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- W2364486139 abstract "The effect of the thermal annealing temperature on the electrical and optical properties of Mg-doped InGaN/GaN heterostructures in O 2 ambient was systematically investigated.The current-voltage characteristics and surface sheet resistance measurements show that,compared with p-GaN,the optimum annealing temperature of p-InGaN/GaN heterostructures is lower and the nonalloyed Ni/Au ohmic contacts can be obtained.It is suggested that relative narrower bandgap of InGaN,strong polarization effect in p-InGaN/GaN heterosturctures,and equilibrium vapor pressure of nitrogen over InN higher than that over GaN are the main reasons for the above results.Furthermore,in the photoluminescence spectrum at 10 K of the as-grown p-InGaN/GaN heterostructures,there are two peaks centered at 2.95 eV and 2.25 eV respectively,whose intensities gradually decrease when the thermal annealing temperature increases.To explain the photoluminescence spectra,the recombination mechanism between H-related complex and Mg-acceptor,in which donor-like compensating center play an important role,was proposed." @default.
- W2364486139 created "2016-06-24" @default.
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- W2364486139 date "2007-01-01" @default.
- W2364486139 modified "2023-09-25" @default.
- W2364486139 title "Thermal Annealing Effect on Mg-doped InGaN/GaN Heterostructures in O_2 Ambient" @default.
- W2364486139 hasPublicationYear "2007" @default.
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