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Structure and Thermoelectric Properties of Bi2-xSbxTe? Nanowires Grown in Flexible Nanoporous Polycarbonate Templates.

ABSTRACT: We report the room-temperature growth of vertically aligned ternary Bi2-xSbxTe? nanowires of diameter ~200 nm and length ~12 µm, within flexible track-etched nanoporous polycarbonate (PC) templates via a one-step electrodeposition process. Bi2-xSbxTe? nanowires with compositions spanning the entire range from pure Bi?Te? (x = 0) to pure Sb?Te? (x = 2) were systematically grown within the nanoporous channels of PC templates from a tartaric-nitric acid based electrolyte, at the end of which highly crystalline nanowires of uniform composition were obtained. Compositional analysis showed that the Sb concentration could be tuned by simply varying the electrolyte composition without any need for further annealing of the samples. Thermoelectric properties of the Bi2-xSbxTe? nanowires were measured using a standardized bespoke setup while they were still embedded within the flexible PC templates.

SUBMITTER: Datta A 

PROVIDER: S-EPMC5459006 | biostudies-literature | 2017 May

REPOSITORIES: biostudies-literature

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Structure and Thermoelectric Properties of Bi<sub>2-x</sub>Sb<sub>x</sub>Te₃ Nanowires Grown in Flexible Nanoporous Polycarbonate Templates.

Datta Anuja A   Sangle Abhijeet A   Hardingham Nick N   Cooper Charles C   Kraan Max M   Ritchie David D   Narayan Vijay V   Kar-Narayan Sohini S  

Materials (Basel, Switzerland) 20170519 5

We report the room-temperature growth of vertically aligned ternary Bi<sub>2-<i>x</i></sub>Sb<i><sub>x</sub></i>Te₃ nanowires of diameter ~200 nm and length ~12 µm, within flexible track-etched nanoporous polycarbonate (PC) templates via a one-step electrodeposition process. Bi<sub>2-<i>x</i></sub>Sb<i><sub>x</sub></i>Te₃ nanowires with compositions spanning the entire range from pure Bi₂Te₃ (<i>x</i> = 0) to pure Sb₂Te₃ (<i>x</i> = 2) were systematically grown within the nanoporous channels of  ...[more]

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