Cellulose paper/Bi2Te3 thermoelectric thin-film composite material and preparation method thereof
A cellulose paper and thermoelectric film technology, applied in the field of composite materials, can solve problems such as low melting point and easy change of components, and achieve the effects of improving thermoelectric performance, good ability to retard crack growth, and good flexibility.
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[0034] In the specific implementation process, the cellulose paper of the present invention / Bi 2 Te 3 Thermoelectric thin film composites comprising a cellulose paper substrate with Bi uniformly deposited on its surface 2 Te 3 Thermoelectric thin film layers to form cellulose paper-Bi 2 Te 3 Thermoelectric thin film layer structure. Among them, the thickness of the cellulose paper is 50-100 μm, and the cellulose paper is composed of a large number of cellulose fibers with randomly distributed orientations and diameters ranging from hundreds of nanometers to 10 microns (generally 0.5-10 μm). The fiber length is 100-500 μm, and has good bending resistance and flexibility. The grain size of the film layer deposited on the cellulose paper can vary in the range of 90-520nm according to the deposition temperature, the crystal quality is high, there is no observable nano-hole structure and other defects, and the composition is uniform and adjustable. Bi 2 Te 3 The nominal thi...
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