Quartz glass purity

Purity is an important indicator of quartz glass, which has a great influence on physical and chemical properties and performance, such as devitrification, high-temperature quartz glass strength, softening point, light conduction, thermal stability, chemical stability, radiation resistance, fluorescence characteristics, etc. In addition, quartz glass used in the semiconductor industry is more demanding in terms of purity, and trace impurities will have a serious impact on the electrical properties, lifetime and integration of semiconductor materials.

Since the purity requirements of semiconductor materials are controlled below the order of ppb, quartz glass should be controlled on the order of PPm to meet the needs of the semiconductor industry. The partial condensation coefficient of B is close to 1, which is the most difficult to remove. It is one of the most harmful impurities. Cu, Fe, Ti and the like affect the minority carrier lifetime of the semiconductor. K, Na, and Li are harmful impurities that cause micro defects in the single crystal material. The company has been serving the semiconductor industry for more than 40 years and is committed to the development of these harmful impurities.