Cell Lab 3N5 (99.95%) Magnesium Fluoride Pieces — premium MgF₂ evaporation material for optical coatings, solar cells, and laser optics. High transparency, low refractive index, and excellent thermal stability for precision thin-film deposition.
Cell Lab 3N5 (99.95%) Magnesium Fluoride Pieces — premium MgF₂ evaporation material for optical coatings, solar cells, and laser optics. High transparency, low refractive index, and excellent thermal stability for precision thin-film deposition.

Cell Lab 3N5 (99.95%) Magnesium Fluoride (MgF₂) Pieces Evaporation Materials [1–3 mm]

Cell Lab 3N5 (99.95%) Magnesium Fluoride (MgF₂) Pieces Evaporation Materials [1–3 mm] High-Transparency MgF₂ for Optical Coatings, Solar Cells, and Laser Applications General Description Cell Lab 3N5 (99.95%) Magnesium Fluoride (MgF₂) Pieces are high-purity alkaline earth metal fluoride materials designed...
Vendor: Cell Lab
SKU: ST0084
Product type: Evaporation Materials
£119.00
£119.00
Weight: 500g
Subtotal: £119.00
Description
Description
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Cell Lab 3N5 (99.95%) Magnesium Fluoride (MgF₂) Pieces Evaporation Materials [1–3 mm]

High-Transparency MgF₂ for Optical Coatings, Solar Cells, and Laser Applications

General Description

Cell Lab 3N5 (99.95%) Magnesium Fluoride (MgF₂) Pieces are high-purity alkaline earth metal fluoride materials designed for optical coating, antireflection layers, and high-power laser optics. With its exceptionally low refractive index (n ≈ 1.36) and excellent transparency from UV to IR regions, MgF₂ is one of the most widely used thin-film materials in crystalline silicon solar cells, VUV mirrors, and optical components.

Due to its high resistance to laser-induced damage, hardness, and stability in corrosive environments, MgF₂ is a preferred choice for vacuum deposition, UV optics, and laser protective coatings. When evaporated onto aluminium, it significantly enhances VUV reflectivity and prevents oxidation.

Key Features

  • High Optical Transparency – Ideal for UV, visible, and infrared optical coatings.

  • Low Refractive Index (1.36–1.38) – Perfect for multilayer antireflection coatings and solar applications.

  • Excellent Thermal Stability – High melting point (1,261 °C) for consistent vacuum evaporation.

  • High Damage Threshold – Resistant to laser-induced breakdown and environmental degradation.

  • Versatile Thin-Film Material – Enhances reflectance, reduces optical losses, and improves coating durability.

Technical Specifications

Parameter Specification
Name Magnesium Fluoride
Symbol MgF₂
CAS Number 7783-40-6
Molecular Weight 62.30 g/mol
Appearance White, Crystalline Solid
Purity 99.95% (3N5)
Melting Point 1,261 °C
Theoretical Density 3.15 g/cm³
Refractive Index 1.36–1.38
Solubility Soluble in water (0.076 g/L) and nitric acid; insoluble in ethanol
Z Ratio 0.637
E-Beam Compatibility Excellent
Thermal Evaporation Techniques Boat: Mo, Ta; Crucible: Al₂O₃
E-Beam Crucible Liner Material Graphite, Molybdenum
Temperature (°C) for Vapour Pressure (Torr) 10⁻⁴: ~1,000 °C
Comments Substrate temperature and deposition rate control are crucial; reacts with W (Mo preferred)

Applications & Industries

  • Optical Coatings – Used for UV, IR, and visible-range optical elements and antireflective films.

  • Solar Energy – Second-layer antireflection coating on crystalline silicon solar cells.

  • Laser Optics – Ideal for high-power laser mirrors and protective window coatings.

  • Vacuum Ultraviolet (VUV) Mirrors – Enhances aluminium reflectivity and oxidation resistance.

  • Scientific Instrumentation – Used in spectrometers, telescopes, and optical sensors.

FAQ

Q1: Why is MgF₂ preferred for optical coatings?
Its low refractive index and wide transparency range make it ideal for multilayer optical and antireflective coatings.

Q2: Can MgF₂ be used in laser optics applications?
Yes. It withstands high laser fluence, providing excellent stability against laser-induced damage.

Q3: What are suitable crucible materials for MgF₂ evaporation?
Molybdenum or alumina crucibles are recommended; avoid tungsten due to reactivity.

Q4: Can Cell Lab supply custom MgF₂ purities or sizes?
Yes. Customised purity, size range, and bulk packaging are available for R&D or industrial use.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

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