MSDS File
Product Overview
Tellurium Evaporation Materials (Te) is an elemental evaporation source for optical, electronic, semiconductor, and compound-film development. These materials can differ substantially in vapor pressure, reactivity, and thermal behavior, so evaporation method and source hardware should be selected from the actual material properties rather than by product name alone. Clean handling and controlled preconditioning are especially useful when film composition or contamination limits are tight.
Evaporation Behavior and Process Considerations
Source heating should be matched to the material’s vapor-pressure curve and reactivity. Some materials sublime or evaporate before forming a conventional melt, while others require localized e-beam heating. A controlled ramp, clean source hardware, and rate monitoring can reduce sudden outgassing or unstable flux.
Technical Data
| Parameter | Typical Value / Range | Importance |
|---|---|---|
| Material | Tellurium (Te) | Core functional element for chalcogenide films |
| Purity | 99.9% – 99.999% | Impurity control affects electrical & optical properties |
| Form | Pellets, granules, shots, pieces | Compatible with different evaporation sources |
| Melting Point | ~449.5 °C | Enables efficient thermal evaporation |
| Deposition Method | Thermal / E-beam evaporation | Flexible PVD compatibility |
| Packaging | Vacuum-sealed, inert protected | Prevents oxidation and contamination |
| Material | Key Advantage | Typical Application |
|---|---|---|
| Tellurium Evaporation Materials | Precise chalcogen control | Semiconductor & IR films |
| Selenium | Lower evaporation temperature | Photovoltaic buffer layers |
| Sulfur | High vapor pressure | Chalcogenide research films |
| Question | Answer |
|---|---|
| Can purity and particle size be customized? | Yes, purity grade and physical form can be tailored to your process. |
| Is tellurium suitable for thermal evaporation? | Yes, its melting point allows stable thermal and e-beam evaporation. |
| How is oxidation prevented during shipping? | Materials are vacuum-sealed or packed under inert atmosphere. |
| Which industries use tellurium most? | Semiconductor, photovoltaics, IR optics, thermoelectrics, and R&D. |
| Is documentation provided? | Certificate of Analysis is available upon request. |
Typical Thin-Film Applications
- Thin-film R&D requiring a composition-specific evaporation source
- Optical, semiconductor, electronic, energy, and advanced-material coating studies depending on the compound
- Custom PVD research using pellets, pieces, granules, or other source forms
Source Form and Ordering Considerations
For quotation, provide material, purity, source form, particle or piece size, quantity, evaporation method, and any boat, basket, crucible, or e-beam hearth constraints. If the material will be used for a specific coating stack, sharing the intended film thickness or deposition application can help with source-form selection and packaging recommendations.
Frequently Asked Questions
How should the evaporation method for Tellurium be selected?
Select the method from melting point, vapor pressure, decomposition behavior, charge size, and the available source hardware. Resistance heating and electron-beam evaporation are the most common starting options.
What source form is available for Tellurium?
Depending on the material, pellets, pieces, granules, tablets, or other compact forms can be reviewed for compatibility with the customer’s evaporator.
Why is source preconditioning important for Tellurium?
Gradual preheating can remove adsorbed gas, stabilize the charge, and reduce spitting or pressure excursions before film deposition.
Can the film composition differ from the Tellurium source?
Yes. Preferential evaporation, decomposition, re-evaporation, and substrate conditions can all change the final film composition.
Does purity matter for Tellurium evaporation material?
Yes. Source purity contributes directly to the contamination budget of the deposited film, together with chamber, crucible, and substrate cleanliness.
What information should I send TFM for a Tellurium RFQ?
Provide material or formula, purity, source form and size, quantity, evaporation method, holder constraints, and any film or documentation requirements.
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