Low Pressure (LP) CVD, Doping |
Thermco LTO Deposition Furnace thermcoLTO |
Silicon dioxide (SiO2) is deposited at between 300 and 450C (depending on needs... ie metals 300C), low pressure (~350 mtorr), from silane and oxygen with or without phosphine doping. Doped LTO is also called PSG, or phosphosilicate glass. The refractive index of the film depends on the phosphorous content, lower deposition rate. The refractive index is also influenced by the temperature of the deposition. (Six inch furnace)
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Flexible |
SNF Cleanroom Paul G Allen L107 |