Silicon Jan 9, 2008

Silicon(Si) is commonly used as a substrate material for infrared reflectors and windows in the 1.5um-8um region. The strong absorption band at 9um makes it unsuitable for CO2 laser transmission applications but it is frequently used for laser mirrors because of its high thermal conductivity and low density. Silicon is also a useful transmitter in 20um range.

MATERIAL PROPERTIES

Material Type CZ, FZ ; N or P
Crystal Direction {100}/{111}
Resistivity(Ω·cm) 0.003-50
Vertical Resistivity Change P Type<6%, N Type <25%
Oxygen Contents and Difference (at cm-3)5.0-7.8×10-17± 0.5
Vertical Oxygen Contents Change < 5%
Carbon Content (at cm-3) ≤ 2.0×10-16
Fe Content (at cm-3 ≤ 1.0×10-11
Surface Metal (at cm-3) Cu / Cr / Fe / Ni ≤ 5.0×10-10 Al / Zn / K / Na / Ca
≤ 2.0×10-11

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