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Erbium(III) Fluoride Evaporation Materials

VD0780 Erbium(III) Fluoride Evaporation Materials, ErF3

Catalog No.VD0780
MaterialErbium Fluoride (ErF3)
Purity99.9% ~ 99.95%
ShapePowder/ Granule/ Custom-made

TFM stands out as a premier provider of high-purity Erbium(III) Fluoride for evaporation applications, alongside an extensive range of other evaporation materials. Our offerings include both powder and granule forms, with the option for customized formats to meet specific requirements.

MSDS File

Introduction

Erbium(III) Fluoride Evaporation Materials (ErF₃) are high-purity rare earth fluoride sources developed for precision thin film deposition in optical, photonic, and advanced coating systems. ErF₃ is particularly valued for its optical transparency in the infrared region and its ability to introduce erbium-related emission characteristics into deposited films.

In vacuum evaporation processes such as thermal and electron beam evaporation, the chemical stability and stoichiometric control of fluoride materials are critical. Carefully processed ErF₃ evaporation materials provide stable vaporization behavior and consistent thin film composition for demanding optical and research applications.

Detailed Description

Erbium(III) Fluoride (ErF₃) is a crystalline rare earth fluoride with a high melting point (~1350°C) and excellent chemical stability under vacuum conditions. For thin film deposition, it is supplied in powder, granule, or pellet form, depending on the evaporation source design and process requirements.

Key features include:

  • High Purity Levels (3N–5N typical) – Reduces oxygen and metallic impurities that could affect film transparency and refractive index.

  • Stoichiometric ErF₃ Composition – Ensures controlled incorporation of erbium and fluorine in deposited layers.

  • Low Oxygen Contamination – Essential for maintaining optical clarity and minimizing scattering losses.

  • Optimized Particle Morphology – Supports uniform melting and evaporation with reduced spitting.

Due to the sensitivity of fluoride compounds to moisture, ErF₃ should be handled in dry environments and stored in vacuum-sealed or inert packaging. Pre-conditioning or mild pre-heating in vacuum can help remove surface-adsorbed moisture before deposition.

In multilayer optical stacks, ErF₃ is often used as a functional or active layer where rare earth ion transitions are required, especially in infrared and photonic device development.

Applications

Erbium(III) Fluoride Evaporation Materials are widely used in:

  • Infrared Optical Coatings
    Transparent layers for IR optics and laser components.

  • Photonic & Laser Materials Research
    Er-containing thin films for emission at ~1.5 µm wavelengths, relevant to optical communication systems.

  • Multilayer Interference Coatings
    Functional fluoride layers combined with other high/low index materials.

  • Advanced Optical Filters
    Precision spectral filtering in research and instrumentation.

  • Thin Film R&D
    Exploration of rare earth fluoride-based photonic structures.

Technical Parameters

ParameterTypical Value / RangeImportance
Purity99.9% – 99.999% (3N–5N)Improves optical clarity and film stability
Chemical FormulaErF₃Ensures stoichiometric thin film composition
FormPowder / Granules / PelletsCompatible with evaporation systems
Melting Point~1350°CSuitable for thermal and e-beam evaporation
Moisture SensitivityModerate (dry storage required)Prevents hydrolysis and contamination
PackagingVacuum-sealed / inert-packedMaintains chemical integrity

Comparison with Related Fluoride Materials

MaterialKey AdvantageTypical Application
Erbium(III) Fluoride (ErF₃)Infrared-active rare earth functionalityPhotonic & IR coatings
Magnesium Fluoride (MgF₂)Excellent low refractive indexAnti-reflection coatings
Lanthanum Fluoride (LaF₃)High transparency and stable fluoride matrixOptical multilayers
Yttrium Fluoride (YF₃)Good chemical stability and optical clarityLaser & optical films

Compared to non-active fluorides like MgF₂, ErF₃ introduces specific rare earth optical transitions, enabling functional thin films for photonic and communication-related applications.

FAQ

QuestionAnswer
Is ErF₃ suitable for thermal evaporation?Yes, it is compatible with thermal and e-beam evaporation, though careful temperature control is recommended.
Can purity levels be customized?Yes, different purity grades are available depending on optical performance requirements.
Does ErF₃ absorb moisture?It is sensitive to moisture; dry storage and pre-bake procedures are recommended.
What industries use ErF₃ films most?Optical coatings, infrared systems, laser research, and photonic device development.
Are custom sizes available?Yes, particle size and pellet dimensions can be tailored to specific equipment needs.

Packaging

Our Erbium(III) Fluoride Evaporation Materials are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. We take great care to prevent any potential damage during storage and transportation, ensuring the materials arrive in perfect condition.

Conclusion

Erbium(III) Fluoride Evaporation Materials (ErF₃) offer a reliable and high-purity solution for depositing rare earth fluoride thin films with infrared functionality and optical stability. With controlled composition, tailored forms, and strict handling standards, ErF₃ supports advanced optical coating systems and photonic research applications.

For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

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FAQ

  • They are high‐purity substances (e.g. metals, alloys, or compounds) used in thermal or electron‐beam evaporation processes to form thin films on substrates.

  • Typically, they’re processed into a form (often ingots, pellets, or wires) that can be efficiently vaporized. Preparation emphasizes high purity and controlled composition to ensure film quality.

  • Thermal evaporation and electron-beam (e-beam) evaporation are the two main techniques, where material is heated (or bombarded with electrons) until it vaporizes and then condenses on the substrate.

  • Thermal evaporation heats the material directly (often using a resistive heater), while e-beam evaporation uses a focused electron beam to locally heat and vaporize the source material—each method offering different control and energy efficiency.

  • Key parameters include source temperature, vacuum level, deposition rate, substrate temperature, and the distance between the source and the substrate. These factors influence film uniformity, adhesion, and microstructure.

  • Evaporation generally produces high-purity films with excellent control over thickness, and it is especially suitable for materials with relatively low melting points or high vapor pressures.

  • Challenges include issues with step coverage (due to line-of-sight deposition), shadowing effects on complex topographies, and possible re-evaporation of material from the substrate if temperature isn’t properly controlled.

  • Common evaporation materials include noble metals (e.g., gold, silver), semiconductors (e.g., silicon, germanium), metal oxides, and organic compounds—each chosen for its specific optical, electrical, or mechanical properties.

  • Selection depends on desired film properties (conductivity, optical transparency, adhesion), compatibility with the evaporation process, and the final device application (semiconductor, optical coating, etc.).

  • Optimizing substrate temperature, deposition rate, and chamber vacuum are critical for ensuring that the film adheres well and forms the intended microstructure without defects.

  • Troubleshooting may involve checking the source material’s purity, ensuring stable source temperature, verifying the vacuum level, adjusting the substrate’s position or temperature, and monitoring deposition rate fluctuations.

While evaporation tends to yield very high purity films with excellent thickness control, it is limited by its line-of-sight nature. In contrast, sputtering can deposit films more uniformly on complex surfaces and is more versatile for a broader range of materials.

 

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