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High-quality InGaN MQW on low-dislocation-density GaN substrate grown by hydride vapor-phase epitaxy
 
A low-dislocation-density thick GaN layer was successfully grown using selective-area HVPE growth combined with epitaxial lateral overgrowth. The InGaN MQWs fabricated on this thick GaN layer showed superior optical properties compared with that on a sapphire substrate. Mg diffusion, induced by threading dislocations, was greatly suppressed for the LEDs on the HVPE-grown GaN layer. The results clearly indicate that the HVPE-grown GaN substrate will be useful for achieving high-performance light-emitting devices.
 
Source: Journal of Crystal Growth
 
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