GaN is widely implemented in radio frequency devices, light-emitting diodes (LEDs), and power electronics, due to its ability to operate at high frequency and high temperature. Increasing adoption of LEDs is a major factor boosting growth of the GaN epitaxial wafers market. Furthermore, advancement in GaN technology has led to the development of efficient GaN substrates with free macro defect density and low defect density. Hence, GaN substrates can increasingly be used for realizing LEDs with a wafer diameter from 2 inch up to 6 and 8 inch. Increasing adoption of LEDs is expected to drive growth of the GaN epitaxial wafers market during the forecast period. However, competition from Sic in high-voltage semiconductor applications and high product cost are factors which are expected to hinder growth of the global GaN epitaxial wafers market during the forecast period.