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Physical properties of gallium oxide

Gallium oxide Ga2O3 overview

Gallium oxide is an inorganic compound with the chemical formula Ga2O3. Also known as gallium trioxide, it is a wide bandgap semiconductor with Eg=4.9eV. Its electrical conductivity and luminescent properties have long attracted attention. Ga2O3 is a transparent oxide semiconductor material with broad application prospects in optoelectronic devices.

Preparation of gallium oxide Ga2O3

1. Add a high-concentration hot aqueous solution of NaHCO3 to the hot aqueous solution of gallium trichloride GaCl3, and boil until all the hydroxides of gallium are precipitated. Wash the precipitate with hot water until there is no Cl-, and calcine it at above 600 ° C to obtain β-Ga2O3. When NH4Cl remains, it reacts with Ga2O3 at 250°C to generate volatile GaCl3.

2. This is the production method of high-purity Ga2O3. Using high-purity metal Ga as anode, dissolved in 5%~20% H2SO4 solution, adding ammonia water to the solution, cooling, repeatedly crystallizing Ga(NH4)(SO4)2, drying at 105 ℃, under the condition of excess oxygen After burning at 800°C for 2 hours, a product with a purity of 99.99% to 99.9999% is obtained.

3. Weigh 1kg of 99.9999% high-purity gallium into a three-necked flask, add high-purity nitric acid to dissolve the gallium completely, then filter, pour the filtrate into a three-necked flask, and move it to an electric furnace for evaporation (in a fume hood). ), and when concentrated to near crystallization, the solution was transferred to a large evaporating dish and evaporated to dryness. Put the evaporated Ga(NO3)3 in a muffle furnace for burning, the temperature is controlled at 550 ℃, burning for 5h, after cooling, take out the finished product to obtain 1.2kg of high-purity gallium oxide.

Gallium oxide Ga2O3 application

Gallium oxide Ga2O3 is used as a high-purity analytical reagent in the electronics industry for the preparation of semiconductor materials.

Gallium oxide has been used in research on lasers, phosphors and luminescent materials. Gallium oxide is also used as an insulating layer for tight connections.

Monoclinic β-Ga2O3 is mainly used in gas sensors and phosphors, and can also be used in dielectric coatings for solar cells.

In semiconductors; gas sensing; in catalysis, gallium oxide is also used.

Application of gallium oxide nanostructures as blue and ultraviolet light emitters in optoelectronic devices.

This stable oxide also shows potential for deep ultraviolet transparent conducting oxides and transistor applications.

Gallium oxide (Ga2O3) thin films have important commercial value as gas sensing materials.

Production of Ga2O3-Al2O3 catalysts using Ss-gallium(III) oxide.


Physical properties of gallium oxide

White triangular crystalline particles. not soluble in water. Slightly soluble in hot acid or alkali solution. Melting point 1900°C (converted to beta form at 600°C).

Soluble in alkali metal hydroxides and dilute inorganic acids.

There are alpha and beta variants. The α type is a white rhombic hexahedron.

Physical data:

Properties: α-Ga2O3 is hexagonal, β-Ga2O3 is monoclinic.

Melting point (ºC): 1740

Solubility: Insoluble in water. Slightly soluble in hot acid or alkali solution.

Gallium Oxide Ga2O3 Product Price

The price of gallium oxide Ga2O3 products will change randomly with the production cost of gallium oxide Ga2O3, transportation cost, international situation, market supply and demand and other factors. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality products, customized services, low-cost nanomaterials and chemicals by providing a full range of customized solutions. If you are looking for gallium oxide Ga2O3 products, please feel free to send an inquiry to get the latest gallium oxide Ga2O3 prices (

Gallium Oxide Ga2O3 Product Supplier

Tanki New Materials Ltd. is a global gallium oxide Ga2O3 supplier with extensive experience in the performance, application and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (gallium oxide Ga2O3, Ga2O3, titanium nitride, etc.) high-purity targets, functional ceramics and structural devices, and provides OEM services.

If you are looking for high quality gallium oxide Ga2O3, please feel free to contact us and send an inquiry. (

Technical Parameter of Gallium Oxide Ga2O3 Powder :
Product NameMFPurityParticle SizeMelting PointMolecular weightColor
Gallium OxideGa2O399.90%-100 mesh1740187.44White
Gallium Oxide Powder Properties
Other NamesDigallium trioxide, Gallium sesquioxide, Gallia,
Oxo-oxogallanyloxy-gallane, Gallium(III) oxide,
Gallium trioxide
CAS No.12024-21-4
Compound FormulaGa2O3
Molecular Weight187.44
AppearanceWhite Powder
Melting Point1900 
Boiling PointN/A
Density5.88 g/cm3
Solubility in H2ON/A
Exact Mass187.835 g/mol
Monoisotopic Mass185.835906 Da
Gallium Oxide Powder Health & Safety Information
Signal WordN/A
Hazard StatementsN/A
Hazard CodesN/A
Risk CodesN/A
Safety StatementsN/A
Transport InformationNONH for all modes of transport

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