Bismuth Telluride (Bi₂Te₃) Sputtering Targets
Purity: 99.999% Size: 1” Thickness: 0.250”
Sputtering is a reliable technology for depositing thin films from various materials onto substrates of different shapes and sizes. This process is highly repeatable and scalable, suitable for both small research projects and medium-to-large production batches. Depending on process parameters, chemical reactions may occur on the target surface, in-flight, or on the substrate, allowing precise control over film growth and microstructure.
Applications of Sputtering Targets
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Thin Film Deposition: Material is eroded from the target and deposited onto substrates such as silicon wafers.
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Semiconductor Etching: Sputter etching is ideal for applications requiring high etching anisotropy without selectivity concerns.
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Analytical Techniques: Secondary ion mass spectrometry (SIMS) uses sputtering to analyze target composition and detect trace impurities.
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Space Applications: Sputtering contributes to space weathering, affecting the physical and chemical properties of airless bodies like asteroids and the Moon.
Bismuth Telluride (Bi₂Te₃) Properties and Uses
Bismuth telluride is a gray semiconductor compound of bismuth and tellurium. Alloyed with antimony or selenium, it is an efficient thermoelectric material for refrigeration and portable power generation. Bi₂Te₃ also functions as a topological insulator, showing thickness-dependent physical properties.
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Thermoelectric Devices: Widely used in bulk devices operating near ambient temperature.
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Thin Film Applications: Nanostructured Bi₂Te₃ thin films are used in chip-scale micro-coolers and flexible micro-power generators.
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Enhanced Performance: Advances in nanotechnology and well-ordered thin film structures significantly boost thermoelectric efficiency over bulk materials.
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Research Considerations: Composition, microstructure, morphology, thickness, stress-strain, and substrate conditions all influence thin film thermoelectric properties.
