Figure 6
From: 85% internal quantum efficiency of 280-nm AlGaN multiple quantum wells by defect engineering

Surface morphology images of AlN with (a) 0, (b) 3, (c) 10, (d) 20, and (e) 30 period SL structures after etching in a KOH solution.
From: 85% internal quantum efficiency of 280-nm AlGaN multiple quantum wells by defect engineering

Surface morphology images of AlN with (a) 0, (b) 3, (c) 10, (d) 20, and (e) 30 period SL structures after etching in a KOH solution.