Rising adoption of LEDs is leading to rising demand for GaN epitaxial wafers

 

GaN epitaxial wafers (Gallium Nitride) are semiconductor substrates used in the manufacture of high-power and high-frequency electronic devices such as LEDs, power amplifiers, and radio frequency (RF) devices. They are commonly created using epitaxy, which involves developing a thin layer of GaN crystal on a substrate material such as sapphire, silicon, or silicon carbide. To improve the performance of the resultant devices, the attributes of the GaN layer, including its crystal structure and doping, can be accurately regulated throughout the epitaxial growth process. GaN epitaxial wafers outperform other materials in terms of features such as high breakdown voltage, high thermal conductivity, and low on-resistance.

The market for GaN epitaxial wafers is predicted to expand rapidly in the next years due to rising demand for GaN-based devices in a variety of applications, including power electronics, RF components, and LEDs. The market is likely to be dominated by Asia Pacific, with China being the largest producer and user of GaN epitaxial wafers. Nichia Corporation, Cree Inc., Epistar Corporation, and OSRAM Opto Semiconductors GmbH are among the market's key participants. In addition, considerable technological improvements and investments in research and development activities are projected in the next years.

A wafer made of semiconductor single crystal materials serves as the substrate. The substance can be directly entered into the wafer manufacturing operation to produce semiconductor devices; it can also be treated by epitaxial processing to produce epitaxial wafers. Epitaxy is the process of generating a new single crystal on a single crystal substrate that has been carefully processed by pruning, grating, shining, and so on.