Patterned sapphire substrate (PSS), that is, a mask for dry etching grown on a sapphire substrate. The mask is patterned by a standard photolithography process, and the sapphire is etched using ICP etching technology. The mask is removed, and the GaN material grown on it turns the preliminary epitax Read More

What is Third-generation semiconductor materialsThis is determined by the material. Semiconductor materials are important materials for making transistors, integrated circuits, power electronic devices, and optoelectronic devices.Its development has gone through three stages: The first-generation ma Read More