The Properties and Application of Gallium Nitride Powder

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Gallium nitride

is an inorganic substance with the chemical formula GaN. It is a compound of nitrogen and gallium. Gallium nitride is a direct bandgap semiconductor and has been commonly used in light-emitting diodes since 1990. The structure of this compound is similar to wurtzite with high hardness.

The Properties of Gallium Nitride:

Gallium nitride is an extremely stable compound and a hard, high melting point material with a melting point of about 1700degC. GaN has a high degree of ionization, which is the highest among Group III-V compounds. Under atmospheric pressure, GaN crystals generally have a hexagonal wurtzite structure.

At room temperature, gallium nitride powder is insoluble in water, acid and alkali, but dissolves at a very slow rate in a hot alkali solution. NaOH, H2SO4 and H3PO4 can corrode poor quality GaN relatively quickly, and can be used for defect detection of these low quality GaN crystals. GaN exhibits unstable characteristics at high temperatures under HCL or H2 gas, and is most stable under N2 gas.

The Application of Gallium Nitride:

Gallium nitride powder used in new electronic devices

The GaN material series has 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 GaN materials and breakthroughs in key thin film growth technologies, a variety of GaN heterostructures have been successfully grown.

Gallium nitride powder used in optoelectronic devices

The GaN material series is an ideal material for short-wavelength light-emitting devices. The band gap of GaN and its alloys covers the spectral range from red to ultraviolet. Since Japan developed a homojunction GaN blue LED in 1991, InGaN/AlGaN double heterojunction ultra-bright blue LEDs and InGaN single quantum well GaN LEDs have come out one after another. In terms of detectors, GaN ultraviolet detectors have been developed, which will have important applications in flame detection and missile early warning.

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