3N5 (99.95%) Magnesium Fluoride (MgF<sub>2</sub>) Pieces (1-3 mm) Evaporation Materials - MSE Supplies LLC

MSE PRO 3N5 (99.95%) Magnesium Fluoride (MgF2) Pieces (1-3 mm) Evaporation Materials

  • $ 13900

MSE PRO™ 3N5 (99.95%) Magnesium Fluoride (MgF2) Pieces (1-3 mm) Evaporation Materials

Magnesium fluoride (MgF2), an alkaline earth metal salt, has a long history of being utilized in optical devices, including c-Si solar cells. Its high transparency and low refractive index (n≈1.36) have proven useful on the front surface of such devices as an inexpensive second−layer antireflection coating. In fact, several world-record crystalline silicon solar cells used such a layer in addition to zinc sulfide, a combination of optical layers that can minimize reflection losses. In addition, due to its relatively high threshold to laser-induced damage, high hardness, and excellent stability in hostile environments, such films have also been utilized for optical components in high power lasers. Another important use of MgF2 is as an evaporated coating onto aluminum, where it greatly increases the Vacuum Ultra-Violet (VUV) reflectance and also retards oxidation.

The dimensions and purities can be customized upon request. Please contact us for customization or bulk orders.

Name Magnesium Fluoride
Symbol MgF2
Molecule Weight (g/mol) 62.30
CAS Number 7783-40-6
Color/Appearance White, Crystalline Solid
Purity ≥99.95%, 3N5
Melting Point (°C) 1,261
Theoretical Density (g/cm3) 3.15
Reflective index 1.36-1.38
Solubility Soluble in water (0.076g/L), nitric acid. Insoluble in ethanol
Z Ratio 0.637
E-Beam Excellent
Thermal Evaporation Techniques Boat:  Mo, Ta
Crucible:  Al2O3
E-Beam Crucible Liner Material Graphite, Molybdenum
Temp. (°C) for Given Vap. Press. (Torr) 10-4:  1,000
Comments Substrate temp and rate control important. Reacts with W. Mo OK.

MSE Supplies offers a variety of crucibles for material evaporation. We can customize the dimensions based on your need.


1.Effects of ion assistance and substrate temperature on optical characteristics and microstructure of MgF2 films formed by electron-beam evaporation. Japanese journal of applied physics 45, no. 6R (2006): 5027.

2.Magnesium fluoride electron-selective contacts for crystalline silicon solar cells,  ACS applied materials & interfaces 8, no. 23 (2016): 14671-14677.