Application of Quartz Glass

Suzhou PTC Optical instrument CO., Ltd provides polariscopes, that can be used to detect the stress and defects of quartz glass products.

Quartz glass is a kind of special industrial technical glass with a single component of silicon dioxide. It is often used to make semiconductors, electric light sources, semiconducting communication devices, lasers, optical instruments, laboratory instruments, electrical equipment, and medical equipment. Moreover, It widely used in industries such as chemical instruments, chemicals, electronics, metallurgy, building materials and national defense that with high temperature and corrosion resistance as well. Besides, high-purity quartz glass can be used to make optical fiber.

With the development of semiconductor technology, quartz glass is widely used in various processes of semiconductor production. For example, the Czochralski method converts polycrystalline into monocrystalline silicon; the cleaning tank used for cleaning; the diffusion tube and the groove boat used for diffusion; the bell jar used for ion implantation, etc.

Quartz glass has a series of special properties that cannot be replaced by other materials. It is made by high temperature melting or chemical vapor deposition, and using crystal, silica, and silicide as raw materials. Quartz glass has a very low thermal expansion coefficient, high temperature resistance, excellent chemical stability, excellent electrical insulation, low and stable ultrasonic delay performance, the best UV-transmitting spectrum performance and visible light and near-infrared spectrum performance. It also has higher mechanical properties than ordinary glass. Therefore, quartz glass is one of the indispensable and excellent materials in modern cutting-edge technology in space technology, atomic energy industry, national defense equipment, automation system, and semiconductor, metallurgy, chemical industry, electric light source, communications, light industry, building materials and other industries.

Application fields of quartz glass

1. Semiconductor field

High-purity quartz material has special physical properties such as temperature resistance, acid resistance, low expansion and excellent tube permeability, which meets the demanding requirements of the semiconductor industry for the content of alkali metals and heavy metals in carrier materials, and has become an indispensable in this field. Missing materials. Diffusion tubes, bell jars, etc. manufactured by it run through key processes such as diffusion, oxidation, deposition, and etching in the semiconductor manufacturing process. With the advancement of technology, quartz materials have been widely used in the semiconductor production process, such as the main base material for photomask substrates in flat panel display technology, and the key material for high-end high-power lighting tools.

2. Photovoltaic field

Solar energy is the only source of energy that can guarantee the future needs of mankind. Therefore, in order to more effectively extract and use solar energy, countries in the world are constantly developing solar photovoltaic module technology, and use this "inexhaustible" energy source as much as possible. Crucibles made of quartz glass are widely used in the production process of solar crystal refining and silicon wafers and silicon rods due to their clean, homogeneous and high temperature resistance performance. They are important consumables and process consumables for the industry.

3. Aerospace and other

Due to a series of severe conditions such as high strength, low dielectric constant and electric loss, high temperature resistance, low expansion coefficient and corrosion resistance, the key parts of aviation and aerospace vehicles require high-strength materials. Quartz fiber is made into quartz wool due to its excellent performance. Quartz cloth and other materials are used to make aircraft nose radomes, rocket tail nozzles, and ablation materials for space vehicles. Quartz glass has high purity, suitable light transmittance and refractive index, good optical performance, excellent light transmittance and heat resistance from the ultraviolet region to the infrared region, and is widely used in optical coatings and the production of electric light source foams .