In this study, Mg-doped GaN epitaxial layers were grown by metalorganic vapor phase epitaxy (MOVPE) and annealed in O2, air and N2. It was found that we could achieve a low-resistive p-type GaN by O2-ambient annealing at a temperature as low as 400°C. The resistivity and hole concentration of the 400°C O2-ambient annealed Mg-doped GaN was 2 Ω-cm and 3 × 1017 cm-3, respectively. These values are equivalent to those values obtained from Mg-doped GaN annealed in N2 ambient at 700°C.
|Journal||Japanese Journal of Applied Physics, Part 2: Letters|
|Issue number||2 A|
|State||Published - 1 Feb 2002|
- Hall measurement
- Mg activation