Park, Sang Jae Improved light extraction efficiency in GaN-based light emitting diode by nano-scale roughening of p-GaN surface. [electronic resource] - Journal of nanoscience and nanotechnology Oct 2008 - 5393-7 p. digital Publication Type: Journal Article ISSN: 1533-4880 Standard No.: 10.1166/jnn.2008.1030 doi