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Superior Evaporants Incorporated

Technical Information

Material: Silicon Monoxide

 

 

Formula: SiO

Molecular weight: 44.09

Product Form: Black granules 2.5‑5mm

Catalog#:  2300

 

Density: 2.13 g/cm3

Melting point: Sublimes

Vapor pressure at 1180o  10‑3 mbar

Vapor pressure at 1080o  10‑2 mbar

 

 

Solubility: Insoluble in H2O soluble in HF

 

 

Type analysis:

Iron(Fe)          <16 ppm      Aluminum(Al)    <41 ppm

Nickel(Ni)        < 3 ppm      Calsium(Ca)     <10 ppm

Chromium(Cr)      < 5 ppm      Potasium(K)     <14 ppm

Manganese(Mn)     < 2 ppm      Strontium(Sr)   < 2 ppm

Titanium(Ti)      < 3 ppm     

Copper(Cu)        < 2 ppm

Sodium(Na)        <12 ppm

 

 

Properties of thin film:

 

Transmission range: 600‑8000nm

Refractive index at 800nm ~ 1.85

Refractive index at 7000nm ~ 1.6

Evaporation temperature ~ 1200‑1600oC

Structure: amorphous

 

 

Hints on evaporation:

 

To achieve 1.85 index, evaporation rate > 50 nm/min

 

To produce Si2O3 films backfill chamber with O2 to 1‑2 x 10‑4

keep rate around 20 nm/min

Si2O3 films produce an index around 1.55 at 500nm

 

Evaporate using molybdnum, tungsten, tantalum boats or E‑Beam

 

 

Applications:

 

Anti‑reflection coatings, Protective films, decorative films(jewelry), Enhanced Metal mirrors.