What is Ga2O3


Gallium oxide (Ga2O3) is a wide-bandgap semiconductor with Eg=4.9eV, and its electrical conductivity and luminescence properties have long attracted attention. Ga2O3 is a transparent oxide semiconductor material and has broad application prospects in optoelectronic devices. It is used as an insulating layer for Ga-based semiconductor materials and as an ultraviolet filter. Ga2O3 can also be used as an O2 chemical detector.

Synonyms: GALLIUM SESQUIOXIDE; GALLIUM OXIDE; GALLIUM (III) OXIDE; GALLIUM (+3) OXIDE; Digallium trioxide; digalliumtrioxide; Ga2-O3; Gallia; Oxidation gallium
CAS number: 12024-21-4;
EINECS number: 234-691-7;
Related Categories: Gallium Metal and Ceramic Science; Oxides; Catalytic and Inorganic Chemistry; Chemical Synthesis; Gallium; Metal Oxides;
Mol file: 12024-21-4.mol

Ga2O3 has five isomers: α, β, γ, δ, ε, the most stable of which is the β-isomer, heated to 1000 ° C or higher or hydrothermal conditions (ie wet method) heated to 300 ° C Above all, all other isomers were converted to the β-isomer. Various pure isomers can be prepared by different methods.

The metal gallium is heated to 420 to 440 ° C in the air; α-Ga 2 O 3 can be obtained by roasting the nitrate to decompose or heat the gallium hydroxide to 500 ° C or the like.

Rapid heating of the hydroxide gel to 400-500 ° C is worthy of γ-Ga 2 O 3 , γ-Ga 2 O 3 has a defective spinel structure.

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