Electrochemical Deposition of Nanocrystalline Bi-Te Films and Their Characterizations
2016
Abstract Galvanostatic electrochemical processes were used to electrodeposit Bi-Te binary thin films. Single-phased Bi 2 Te 3 and Bi 4 Te 3 films were synthesized in turn on the same electrolyte. Bi 2 Te 3 thin film was composed of regular nanorods with the length up to 100 nm and average width of 10 nm, which exhibits large specific areas and benefits to the application as thermoelectric (TE) materials. And the Bi 4 Te 3 thin film is composed of nanoparticles which assembl greatly into irregular polyhedrons. The results prove that it is possible to tune the phase composition and morphology of Bi-Te binary thin films by changing the deposition parameters
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