Delta-doping optimization for high quality p-type GaN
J. Appl. Phys. 104, 083512 (2008); doi:10.1063/1.3000564
Published 22 October 2008
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Delta (
−) doping is studied in order to achieve high quality p-type GaN. Atomic force microscopy, x-ray diffraction, photoluminescence, and Hall measurements are performed on the samples to optimize the
-doping characteristics. The effect of annealing on the electrical, optical, and structural quality is also investigated for different
-doping parameters. Optimized pulsing conditions result in layers with hole concentrations near 1018 cm−3 and superior crystal quality compared to conventional p-GaN. This material improvement is achieved thanks to the reduction in the Mg activation energy and self-compensation effects in
-doped p-GaN.
©2008 American Institute of Physics
−) doping is studied in order to achieve high quality p-type GaN. Atomic force microscopy, x-ray diffraction, photoluminescence, and Hall measurements are performed on the samples to optimize the
-doping characteristics. The effect of annealing on the electrical, optical, and structural quality is also investigated for different
-doping parameters. Optimized pulsing conditions result in layers with hole concentrations near 1018 cm−3 and superior crystal quality compared to conventional p-GaN. This material improvement is achieved thanks to the reduction in the Mg activation energy and self-compensation effects in
-doped p-GaN.
©2008 American Institute of Physics
| History: | Received 18 February 2008; accepted 29 August 2008; published 22 October 2008 |
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http://link.aip.org/link/?JAPIAU/104/083512/1 |
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0021-8979 (print)
1089-7550 (online)
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