Semiconductor Materials for Inorganic LEDs
Moreover, LED fabrication depends on the availability of a latticematched high-quality substrate material upon which the epitaxial layers of the semiconductor material can be grown. e quality of substrate material and minimal lattice mismatch between the semiconductor and substrate material are crucial for high-eciency LEDs. e maximum
substrate wafer size commercially available is one of the vital factors to determine the cost of the fabrication process. Further, transparent substrates have a predilection for ease of light extraction from the LED chip.