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The unique molecular chain structure of high-purity quartz
Release time:
2024-09-30
High-purity quartz, owing to its unique molecular chain structure, crystal lattice geometry, and characteristic lattice‑transformation behavior, exhibits exceptional chemical stability, an extremely low coefficient of thermal expansion, outstanding thermal resistance, high dielectric strength, low and stable ultrasonic delay characteristics, superior mechanical properties compared with ordinary glass, as well as excellent transmission in the ultraviolet region and in the visible and near‑infrared spectral ranges. Consequently, it plays a pivotal role in fields such as semiconductors, photovoltaics, optical fibers, and electric lighting.
High-purity quartz, owing to its unique molecular chain structure, crystal lattice geometry, and characteristic lattice‑transformation behavior, exhibits exceptional chemical stability, an extremely low coefficient of thermal expansion, outstanding thermal resistance, high dielectric strength, low and stable ultrasonic delay characteristics, superior mechanical properties compared with ordinary glass, as well as excellent transmission in the ultraviolet spectrum and in the visible and near‑infrared regions. Consequently, it plays a pivotal role in fields such as semiconductors, photovoltaics, optical fibers, and electric lighting.
In the semiconductor industry, high-purity quartz sand is one of the critical strategic core raw materials for chip manufacturing. The chip‑making process is broadly divided into silicon wafer fabrication, wafer processing, and chip production. The high‑purity quartz materials used at each stage include quartz crucibles for pulling single‑crystal silicon ingots in the wafer‑fabrication phase; quartz glass diffusion tubes, along with associated quartz flanges, quartz glass furnace tubes, and quartz boats, in the wafer‑processing stage; and photomask substrates for lithography, etching, and thin‑film deposition during chip manufacturing. Different quartz products have varying requirements for the purity, inclusion content, and particle size of high‑purity quartz sand, with the highest standards applied to the quartz crucibles used for growing single‑crystal silicon.
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