Bismuth (Bi) Sputtering Targets
Purity: 99.999% Size: 3” Thickness: 0.125”
Sputtering is a versatile method for depositing thin films from various materials onto substrates of different shapes and sizes. This process is repeatable and scalable, making it suitable for both research and production. Depending on process parameters, chemical reactions may occur on the target surface, in-flight, or on the substrate, providing precise control over film growth and microstructure.
Applications of Sputtering Targets
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Thin Film Deposition: Deposits material from the target onto substrates such as silicon wafers.
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Semiconductor Etching: Ideal for processes requiring high anisotropy without selectivity concerns.
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Material Analysis: Supports techniques like Secondary Ion Mass Spectroscopy (SIMS) for detecting composition and trace impurities.
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Space Applications: Contributes to space weathering, altering physical and chemical properties of airless bodies like asteroids and the Moon.
About Bismuth (Bi)
Bismuth is a brittle, silvery-pink metal stable in air and water. Though it has low thermal and electrical conductivity, it is valuable in specialized applications:
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Alloys & Thermal Fuses: Used in low-melting fusible alloys, solders, and thermal fuses.
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Radiation Shielding: High gamma-ray absorption makes it useful for filters or windows, while allowing neutron passage.
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Thermoelectric & Magnetoresistive Devices: Utilized in thermoelectric conversion, devices exploiting magneto-resistance, and electrodes for heavy metal detection.
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Thin Film Semiconductors: Bi films transform into semiconductors at ~30 nm thickness. Deposition methods include RF/DC sputtering, pulsed laser deposition, and thermal evaporation.
Deposition parameters—such as substrate temperature, target potential, ion beam energy, and energy release rate—affect the crystalline structure and morphology of Bi coatings. Applying positive pulses during DC sputtering enhances film density and mechanical properties.
