PSS (Patterned Sapphire Substrate) processing is a process of unevenness on sapphire substrates to increase the brightness of LEDs. By periodically creating a cone with a diameter of about 2.5 μm on the substrate, it has the effect of reducing the crystal defects in GaN and improving the light extraction efficiency due to internal reflections in GaN.

Request more information

Products

RIE-350iPC