Superior Evaporants Incorporated

Technical Information

Material: Niobium Pentoxide

 

 

Formula: Nb2O5

Molecular weight: 265.81

Product Form: white tablets ~ 2 grams

Catalog#:  2450

 

Melting point: 1520oC

Density 4.47 g/cm3

 

Type analysis:

Iron(Fe)          < 5 ppm    Aluminum(Al)    < 5 ppm

Nickel(Ni)        < 3 ppm    Molybdenum(Mo)  < 5 ppm

Titanium(Ti)      < 3 ppm    Silicon(Si)     < 13ppm

Manganese(Mn)     < 3 ppm    Tin(Sn)         < 3 ppm

Chromium(Cr)      < 3 ppm    Tungsten(W)     < 5 ppm

Copper(Cu)        < 5 ppm    Tantalum(Ta)    < 20ppm

 

Properties of thin film:

 

Transmission range: 400‑2000nm

Refractive index at 550nm ~ 2.24

 

 

Hints on evaporation:

 

Substrate temperature ~ 250oC

Deposition rate ~ 25nm/min

O2 partial pressure ~ 1 x 10‑4 mbar

 

Evaporate using E‑Beam

 

 

Applications:

 

Anti‑reflection coatings, Interference filters. Extremely hard and durable films.