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silicon dioxide (SiO2)

Silicon dioxide (SiO2) is quartz glass and occurs naturally as quartz silica. This impure, non-crystalline silicon dioxide is contained in quartz sand and is used for the production of quartz and, after processing into high-purity, monocrystalline silicon, in chip manufacturing and in photovoltaics for the production of solar cells.

Silicon dioxide has a permittivity of 3.9 and a band gap of 8.9 electron volts( eV). The density of silicon dioxide is 2.3 g/cm3, and the refractive index is 1.46. The single- crystal silicon dioxide is used, among other things, in chip manufacturing in an extremely thin layer that lies on the silicon substrate of the wafer.

Englisch: silicon dioxide - SiO2
Updated at: 02.01.2022
#Words: 102
Links: silicon (Si), chip manufacturing, photovoltaics (PV), permittivity, gap
Translations: DE

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