Indium Oxide

Indium Oxide Pellets are a kind of particulate matter with cubic ferromanganese crystal structure, mostly light yellow to yellowish brown in colour, chemically stable, with good electrical conductivity, optical transparency and high melting point, particle size affects the performance, and is widely used in many fields such as electronics, optics, sensing, catalysis and so on.

Characteristic

Chemical formula: In₂O₃;

Molecular weight: 277.6342;

Chemical stability: relatively stable, insoluble in water, but soluble in hot inorganic acids.

Colour: white or light yellow amorphous powder in pure form, will change to reddish brown when heated;

Density: 7.179g/cm³ (25℃);

Melting point: about 2000℃;

Crystal type: cubic ferromanganese ore crystal structure.

Electrical properties: Indium oxide is an n-type semiconductor material with a certain degree of conductivity. It has a wide bandwidth and low resistivity, and these properties make it widely used in electronic devices and semiconductors.

Specific surface area: Indium oxide particles in the nanoscale have a large specific surface area, for example, the specific surface area of some products can reach more than 15m²/g. The high specific surface area gives it high surface activity, which is advantageous in catalysis and adsorption.

Applications

Electronic field:

Transparent conductive material: It is a key material in liquid crystal display (LCD), touch screen, organic light-emitting diode (OLED) and other electronic devices. Indium oxide particles are doped with tin and other elements to form indium tin oxide (ITO), which has both high conductivity and good optical transparency, and can realise electronic transmission without affecting the display effect of the screen, such as mobile phones, tablet PCs, televisions and other equipment screens are widely used ITO materials.

Semiconductor materials: Indium oxide itself is an n-type semiconductor material, which can be used to manufacture semiconductor devices, such as field effect transistors (FETs), diodes, etc., and has potential applications in integrated circuits, electronic chips, and other fields.

Thin-film sensors and detectors: use changes in their electrical properties to detect changes in physical or chemical quantities in the environment, for example, for gas sensors, humidity sensors, pressure sensors, etc., to accurately measure the corresponding physical or chemical parameters.

Optical field:

Optical coatings: can be used as optical coating materials for the manufacture of anti-reflective coatings, transmission-enhancing coatings and so on. For example, indium oxide coating on the surface of eyeglass lenses, optical lenses, solar panels, etc. can reduce the reflection of light and increase the transmittance of light, thus improving the performance of optical devices.

Laser materials: In laser technology, indium oxide particles can be used to prepare laser crystals or laser glasses, which can be used as laser media to participate in the laser generation and amplification process.

X-ray related applications: Indium oxide particles can be used to prepare X-ray transmission windows, which make X-ray transmission more accurate and safer. In addition, it is also used in medical X-ray imaging equipment, X-ray analysis instruments and other fields.

Energy field:

Solar cells: In solar cells, indium oxide particles can be used as electrode materials or auxiliary materials to improve the photoelectric conversion efficiency and stability of solar cells. For example, in dye-sensitised solar cells, indium oxide can be used as a counter electrode material to participate in the charge transfer and collection process.

Battery additives: In alkaline batteries, indium oxide can be used as a mercury substitute corrosion inhibitor, which can improve the electrical performance of the battery and inhibit gas generation, reduce the self-discharge phenomenon of the battery, and prolong the service life of the battery.

Catalysis: Due to its high catalytic activity, indium oxide can be used as a catalyst or catalyst carrier in chemical reactions. For example, in organic synthesis reactions, automobile exhaust purification, pollutant degradation and other processes, indium oxide particles can promote the reaction and improve the efficiency and selectivity of the reaction.

Other fields:
Glass and ceramics industry: it can be used to produce coloured glass and ceramics to impart specific colours and optical properties to the glass and ceramics. For example, indium oxide can be used as a pigment or additive in products such as art glass and decorative ceramics.
Fireproof materials: In some fireproof materials, indium oxide can be used as a component of flame retardants to improve the fireproof performance of the materials.