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.

References

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.

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

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