Direct electrodeposition of highly dense 50 nm Bi2Te 3-ySey nanowire arrays

Marisol Martín-González*, G. Jeffrey Snyder, Amy L. Prieto, Ronald Gronsky, Timothy Sands, Angelica M. Stacy

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

148 Scopus citations

Abstract

Films and arrays of 200 and 50 nm diameter wires of Bi2Te 3-xSex have been electrodeposited in the following general reaction: 2Bi3+ + (3-y)HTeO2 + + (y)H2SeO3 + (9+y)H+ + 18e - → Bi2Te3-ySey + (6+y)H 2O. Films produced from an electrolyte of 0.0075 M Bi, 0.0090 M Te, and 0.0010 M Se in 1 M HNO3 at a potential of ∼0 V vs Ag/AgCl are single phase with composition Bi2Te2.6Se 0.4 as determined by X-ray diffraction, energy-dispersive X-ray spectroscopy, and scanning electron microscopy. Similar conditions yield arrays of 200 and 50 nm Bi2Te3-ySey wires when deposited into porous alumina templates. The wires are single phase, crystalline, and textured, with up to 85% pore filling.

Original languageEnglish (US)
Pages (from-to)973-977
Number of pages5
JournalNano letters
Volume3
Issue number7
DOIs
StatePublished - Jul 1 2003

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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