technology  GaN


German efforts advance semi-polar materials


Lasers and LEDs that are grown on semi-polar planes deliver very impressive performance at green wavelengths,but commercial success of these devices is hampered by a lack of affordable, high-quality substrates with appropriate orientations. To address this,a German team is developing various methods to make semi-polar material, and studying its properties in detail. Richard Stevenson reports.


44 www.compoundsemiconductor.net March 2013


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