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Applications of Gallium Nitride

wallpapers News 2021-08-11
New electronic devices
The Gallium Nitride material series has a low heat generation rate and high breakdown electric field and is an important material for the development of high-temperature high-power electronic devices and high-frequency microwave devices. At present, with the progress of MBE technology in the application of Gallium Nitride materials and breakthroughs in key thin film growth technologies, a variety of Gallium Nitride hetero structures have been successfully grown. New devices such as Metal Field Effect Transistor (MESFET), Hetero junction Field Effect Transistor (HFET) and Modulation Doped Field Effect Transistor have been fabricated from Gallium Nitride materials. Modulation-doped AlGaN/Gallium Nitride structure has high electron mobility (2000cm2/v·s), high saturation velocity (1×107cm/s), and low dielectric constant. It is the preferred material for making microwave devices; Gallium Nitride. The wider band gap (3.4eV) and sapphire and other materials are used as the substrate, which has good heat dissipation performance, which is conducive to the operation of the device under high power conditions.
Optoelectronic devices
The Gallium Nitride material series is an ideal material for short-wavelength light-emitting devices. The band gap of Gallium Nitride and its alloys covers the spectral range from red to ultraviolet. Since Japan developed a homo junction Gallium Nitride blue LED in 1991, InGaN/AlGallium Nitride double hetero junction ultra-bright blue LEDs and In Gallium Nitride single quantum well Gallium Nitride LEDs have come out one after another. At present, Zcd and 6cd single quantum well Gallium Nitride blue and green LEDs have entered the mass production stage, thus filling the gap in the market for many years of blue LEDs. The development history of LED marked by luminous efficiency is shown in Figure 3. Blue light-emitting devices have a huge application market in the fields of high-density optical disc information access, all-optical display, and laser printers. With the continuous deepening of the research and development of III-nitride materials and devices, the GaInN ultra-high blue and green LED technology has been commercialized. Now major companies and research institutions in the world have invested heavily in the development of blue LEDs.

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