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Gallium(III) oxide is an inorganic compound that typically appears as a white powder or crystalline particle with a tetrahedral crystal structure. It exists in two variants, alpha and beta, with alpha being a white rhombic hexahedron that is insoluble in water and slightly soluble in hot dilute acids, but easily soluble in hot strong alkaline solutions and alkali metal hydroxides. It is a wide bandgap semiconductor material with a bandgap width of approximately 4.9 eV, exhibiting excellent conductivity and luminescence properties. It is widely used in optoelectronic devices, such as insulation layers for Ga based semiconductor materials, ultraviolet filters, etc. It can be used to produce luminescent materials and crystal materials, with potential applications in the fields of lighting and display. It can also be used as an infrared sensitive material for manufacturing infrared detectors. When exposed to infrared radiation, gallium oxide undergoes charge transfer, resulting in a change in resistivity and enabling infrared detection. It also has applications in the field of chemical analysis, such as as as a high-purity analytical reagent.
Additional information of chemical compound:
|
Chemical Formula |
Ga2O3 |
|
Exact Mass |
185.84 |
|
Molecular Weight |
187.44 |
|
m/z |
187.84(100.0%),185.84(75.3%), 189.83 (33.2%) |
|
Elemental Analysis |
Ga, 74.39; O, 25.61 |
|
Melting point |
1740℃ |
|
Density |
6.44 g/mL at 2℃ |
|
|
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Gallium(III) oxide, with the chemical formula Ga ₂ O3, is an important inorganic compound that exhibits broad application prospects in multiple fields due to its unique physical and chemical properties. The following will elaborate on its main uses:
semiconductor material
With the rapid development of electric vehicles, smart grids, rail transit and other fields, the demand for high-voltage and high-power electronic devices is increasing day by day. Traditional silicon-based devices are difficult to meet the needs of these fields due to the limitation of breakdown voltage. The breakdown voltage of gallium oxide devices can exceed 3000 V, much higher than silicon-based devices. This enables gallium oxide devices to operate stably in high voltage environments, suitable for applications such as inverters for electric vehicles, high-voltage switches for smart grids, and traction converters for rail transit.
It is predicted that gallium oxide power devices will play a role in the market of 650V/1200V/1700V/3300V, and are expected to fully penetrate the automotive and electrical equipment fields between 2025 and 2030. In power electronic devices, on resistance is a key factor affecting energy loss and efficiency. Traditional silicon-based devices suffer from high energy loss and low efficiency due to their high on resistance. Gallium oxide devices have lower on resistance, which can significantly reduce energy loss and improve energy efficiency.
This makes gallium oxide devices have broad application prospects in high-efficiency power supplies, energy-saving lighting, and other fields. The application demand of GaO power transistors in the field of electronic devices shows a significant growth trend, which is mainly due to the rapid advancement of cutting-edge technologies such as mobile Internet, Internet of Things and artificial intelligence.High electron mobility devices have important applications in high-speed electronic communication, radar systems, and other fields.
Traditional silicon-based devices are difficult to meet the demand for high-speed signal transmission in these fields due to their low electron mobility. Gallium oxide has a high electron mobility, which enables high-speed signal transmission and low delay response. This makes gallium oxide devices have potential applications in high-speed electronic communication fields such as 5G communication and satellite communication. With the continuous advancement of technology, gallium oxide devices are expected to play an important role in high-speed electronic communication systems such as 5G base stations and satellite communication equipment.
There is an urgent need for high-power and high-efficiency RF amplifiers in fields such as radar systems, satellite communications, and wireless base stations. Traditional RF amplifiers are difficult to meet the high power and high efficiency requirements in these fields due to material limitations. Gallium oxide has high thermal stability and low loss characteristics, which can withstand the input of high-power RF signals while maintaining high efficiency output. This makes gallium oxide an ideal material for manufacturing high-power RF amplifiers. It is predicted that the application of gallium oxide power devices in RF amplifiers is expected to expand with technological advancements, especially in applications that require high power and efficiency, such as radar systems, satellite communications, and wireless base stations. In RF communication systems, RF switches and attenuators are key control components.
They need to have characteristics such as high isolation, low insertion loss, and fast switching speed. The high electron mobility and wide bandgap characteristics of gallium oxide enable the manufacture of RF switches and attenuators with high isolation, low insertion loss, and fast switching speed. This makes gallium oxide have broad application prospects in RF communication systems. With the rapid development of 5G communication technology, the demand for high-performance RF switches and attenuators is increasing day by day. Gallium oxide devices are expected to play an important role in this field.
Deep ultraviolet detectors have a wide range of applications in environmental monitoring, biomedical, military reconnaissance, and other fields. Traditional silicon-based detectors are unable to detect deep ultraviolet light due to bandgap limitations. Gallium oxide is highly transparent in the visible and ultraviolet light regions, making it particularly suitable for deep ultraviolet (DUV) optical applications. The deep ultraviolet detector made of gallium oxide has high sensitivity and selectivity, and can accurately detect deep ultraviolet light. UV light-emitting diodes have a wide range of applications in fields such as disinfection and sterilization, photopolymerization, and biological detection.
Traditional ultraviolet light sources are limited in their application range due to their low efficiency and short lifespan. Gallium oxide, as a wide bandgap semiconductor material, is used as a laser emission source in the deep ultraviolet (DUV) band in lasers, with the advantages of low loss and high energy conversion efficiency. UV LEDs made from gallium oxide have high luminous efficiency and long service life. With the advancement of technology, gallium oxide UV LEDs are expected to play an important role in fields such as medical disinfection, water treatment, and air purification.
Chemical Reagents
Gallium(III) oxide is often used as a high-purity analytical reagent due to its high purity and stability. High purity chemical reagents are crucial for ensuring the accuracy and reliability of experimental results in fields such as chemical analysis and biochemical research. Its high purity enables it to meet the strict requirements for reagent quality in these fields. It has a direct impact on the accuracy of the analysis results. High purity gallium oxide reagents can reduce impurity interference in experiments and improve the sensitivity and accuracy of analysis.
In addition, the chemical stability of gallium oxide also ensures that it is not easily deteriorated during storage and use, thereby ensuring the reliability of experimental results. The purity of gallium oxide reagents can usually reach over 99% or even higher, meeting the requirements of high-purity analytical reagents. It is not easy to react with oxygen or moisture in the air at room temperature, has good chemical stability, and is conducive to long-term storage and use. As a high-purity analytical reagent, it can be applied in various chemical analyses and biochemical studies, such as elemental analysis, trace analysis, catalyst research, etc.
Gallium oxide can also be used as a catalyst carrier, especially in some specific chemical reactions. Its unique surface properties and chemical stability make it an effective catalyst support material. Catalyst carriers play a crucial role in chemical reactions, as they not only provide catalytic active sites, but also affect the dispersion, stability, and activity of catalysts. Gallium oxide, as a catalyst carrier, can optimize its surface properties (such as specific surface area, pore size distribution, etc.) by adjusting the preparation process, thereby improving the performance of the catalyst.
In addition, the chemical stability of gallium oxide ensures that it is not prone to chemical changes during catalytic reactions, thereby maintaining the activity of the catalyst. At the same time, gallium oxide also has certain acid-base properties, which can interact with certain active components of the catalyst, further enhancing the activity of the catalyst. Chemical changes are less likely to occur during the catalytic reaction process, ensuring the activity of the catalyst.
Gallium(III) oxide also has important applications in spectroscopic analysis, especially for the determination of impurities in uranium. In the nuclear industry and other fields, the purity requirements for radioactive elements such as uranium are extremely high, so it is necessary to accurately determine the impurity content in them. Gallium oxide is used as a standard substance or reagent in spectroscopic analysis due to its unique chemical properties. Spectral analysis is an analytical method based on the interaction between matter and electromagnetic radiation. When electromagnetic radiation (such as ultraviolet light, visible light, infrared light, etc.) is irradiated onto a substance, the substance absorbs or emits light of a specific wavelength, forming a spectrum.
By analyzing the characteristics of spectra, one can understand the composition and structural information of substances. The application principle of gallium oxide in spectral analysis is mainly based on its chemical reaction or physical adsorption with elements such as uranium. When gallium oxide comes into contact with uranium samples containing impurities, it interacts with the impurities, thereby affecting the spectral characteristics. By comparing the difference between the standard spectrum and the sample spectrum, the impurity content in uranium can be accurately determined.
The interaction between gallium oxide and elements such as uranium makes spectroscopic analysis highly sensitive and capable of detecting trace impurities. By precisely controlling experimental conditions and data analysis methods, the accuracy of spectral analysis results can be ensured. The application of gallium oxide in spectroscopic analysis is not limited to the determination of impurities in uranium, but can also be used for the analysis and detection of other elements.
Gallium(III) oxide is poised to redefine the boundaries of semiconductor technology, offering unmatched performance in power electronics, optoelectronics, and beyond. While challenges like doping and cost persist, ongoing research into novel crystal phases, heterostructures, and scalable synthesis methods is rapidly addressing these barriers. As industries seek greener, more efficient solutions, Ga₂O₃'s unique properties-from its ultra-wide bandgap to its thermal resilience-ensure its central role in the future of advanced materials. With continued innovation, this versatile oxide will not only complement but potentially surpass traditional semiconductors, driving progress in everything from renewable energy to quantum computing.
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