Potassium K Evaporation Material 99.9% Ampoule ATOMFAIR®

Potassium is a highly reactive alkali metal that must be stored and handled under strict dry inert atmosphere to prevent violent oxidation and moisture reaction. The sealed ampoule packaging must only be opened within an inert glovebox or equivalent controlled environment to avoid exposure to air or water vapor.

• Inert storage requirement: Store the sealed ampoule in a dry, oxygen-free environment such as a glovebox or under inert gas purge to prevent degradation.
• Moisture sensitivity: Even trace moisture can cause violent reaction, so all handling tools and containers must be thoroughly dried before use.
• Low melting point thermal constraint: The material melts at 63°C, requiring controlled heating rates and avoidance of localized overheating during evaporation source loading.
• Containment integrity: The sealed ampoule must be inspected for cracks or leaks before transfer to inert atmosphere; any damage compromises safety.

This procedure outlines the safe transfer and thermal evaporation of potassium from sealed ampoule using a Ta/Mo/W boat under inert conditions. All steps must be performed in an inert atmosphere to prevent fire and contamination of the deposition system.

Required Equipment: Inert atmosphere glovebox, Ta/Mo/W evaporation boat, Thermal evaporation source, Vacuum deposition chamber

1. Transfer to glovebox
   Transfer the sealed ampoule into an inert atmosphere glovebox while maintaining the seal to prevent any air ingress.
2. Open ampoule under inert gas
   Open the ampoule only after the glovebox has been purged with dry argon or nitrogen to below 1 ppm oxygen and moisture.
3. Load material into boat
   Place the potassium material into a pre-cleaned and dried Ta/Mo/W evaporation boat, ensuring uniform contact for even heating.
4. Mount boat in evaporation source
   Mount the loaded boat into the thermal evaporation source while still inside the glovebox, then seal the source in a transfer container.
5. Evacuate and evaporate
   Transfer the assembly to the deposition chamber, evacuate to high vacuum, and gradually heat the boat to melt and evaporate the potassium.

Potassium evaporation material (99.9% purity, sealed ampoule) requires strict inert atmosphere handling due to alkali metal reactivity, with low melting point (63°C) and low density (0.86 g/cm³) affecting evaporation process parameters.

Positive

• High-purity 99.9% Potassium: Potassium evaporation material with 99.9% purity ensures minimal contamination for thin-film deposition, supporting reproducible film properties.
• Sealed ampoule containment: Supplied in sealed ampoule to prevent oxidation and moisture absorption, enabling safe handling and storage for reactive alkali metal evaporation.

Trade-offs

• Strict inert handling required: Potassium is highly reactive with air and moisture; evaporation must be performed under strict dry inert atmosphere to prevent safety hazards and film degradation.
• Low melting point and density: With a melting point of 63°C and density of 0.86 g/cm³, the material may require careful temperature control and source design to achieve uniform evaporation rates.

Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.

To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.

Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).