Using anodic aluminum oxide templates and electrochemical method to deposit BiSbTe-based thermoelectric nanowires

Hsin Hui Kuo, Chin Guo Kuo, Chia Ying Yen, Cheng Fu Yang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In this study, the cyclic voltammetry method was first used to find the reduced voltages and anodic peaks of Bi3+, Sb3+, and Te4+ ions as the judgments for the growth of the (Bi,Sb)2 - x Te3 + x-based materials. Ethylene glycol (C2H6O2) was used as a solvent, and 0.3 M potassium iodide (KI) was used to improve the conductivity of the solution. Two different electrolyte formulas were first used: (a) 0.01 M Bi(NO3)3-5H2O, 0.01 M SbCl3, and 0.01 M TeCl4 and (b) 0.015 M Bi(NO3)3-5H2O, 0.005 M SbCl3, and 0.0075 M TeCl4. The potentiostatic deposition process was first used to find the effect of reduced voltage on the variation of compositions of the (Bi,Sb)2 - xTe3 + x-based materials. After finding the better reduced voltage, 0.01 M Bi(NO3)3-5H2O, 0.01 M SbCl3, and 0.01 M TeCl4 were used as the electrolyte formula. The pulse deposition process was successfully used to control the composition of the (Bi,Sb)2 - xTe3 + x-based materials and grow the nanowires in anodic aluminum oxide (AAO) templates.

Original languageEnglish
Article number63
Pages (from-to)1-7
Number of pages7
JournalNanoscale Research Letters
Volume9
Issue number1
DOIs
Publication statusPublished - 2014 Dec 1

Keywords

  • Cyclic voltammetry
  • Electrolyte formula
  • Nanowires
  • Thermoelectric

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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