skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Using galvanostatic electroforming of Bi1–xSbx nanowires to control composition, crystallinity, and orientation

Journal Article · · Journal of Materials Research
DOI:https://doi.org/10.1557/jmr.2014.354· OSTI ID:1146606

When using galvanostatic pulse deposition, we studied the factors influencing the quality of electroformed Bi1–xSbx nanowires with respect to composition, crystallinity, and preferred orientation for high thermoelectric performance. Two nonaqueous baths with different Sb salts were investigated. The Sb salts used played a major role in both crystalline quality and preferred orientations. Nanowire arrays electroformed using an SbI3 -based chemistry were polycrystalline with no preferred orientation, whereas arrays electroformed from an SbCl3-based chemistry were strongly crystallographically textured with the desired trigonal orientation for optimal thermoelectric performance. From the SbCl3 bath, the electroformed nanowire arrays were optimized to have nanocompositional uniformity, with a nearly constant composition along the nanowire length. Moreover, nanowires harvested from the center of the array had an average composition of Bi0.75 Sb0.25. However, the nanowire compositions were slightly enriched in Sb in a small region near the edges of the array, with the composition approaching Bi0.70Sb0.30.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1146606
Report Number(s):
SAND-2014-4485J; PII: S0884291414003549
Journal Information:
Journal of Materials Research, Vol. 30, Issue 02; ISSN 0884-2914
Publisher:
Materials Research SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

References (17)

Constitutional supercooling and the growth of 200 nm Bi–Sb wire array composites journal August 2002
Voltammetry in dimethylsulphoxide—a review journal September 1972
Characterisation of electroplated Bi2(Te1−xSex)3 alloys journal June 2007
Nucleation and initial growth of copper electrodeposits under galvanostatic conditions journal March 1992
Template Epitaxial Growth of Thermoelectric Bi/BiSb Superlattice Nanowires by Charge-Controlled Pulse Electrodeposition journal January 2009
A Tungsten Interlayer Process for Fabrication of Through-Pore AAO Scaffolds on Gold Substrates journal January 2011
Electrodeposition of Bi 1 - x Sb x Films and 200-nm Wire Arrays from a Nonaqueous Solvent journal April 2003
Theoretical investigation of thermoelectric transport properties of cylindrical Bi nanowires journal August 2000
Anomalously high thermoelectric figure of merit in Bi1−xSbx nanowires by carrier pocket alignment journal July 2001
Electrochemical Synthesis of Bi 1– x Sb x Nanowires with Simultaneous Control on Size, Composition, and Surface Roughness journal December 2011
Thermoelectric figure of merit of a one-dimensional conductor journal June 1993
Effective Deposition Potential Induced Size-Dependent Orientation Growth of Bi−Sb Alloy Nanowire Arrays journal October 2006
Pulsed Electrodeposition of Large-Area, Ordered Bi 1 - x Sb x Nanowire Arrays from Aqueous Solutions journal December 2004
Electrochemical Deposition of Bi 2 (Te,Se) 3 Nanowire Arrays on Si journal January 2012
High-Density 40 nm Diameter Sb-Rich Bi2xSbxTe3 Nanowire Arrays journal June 2003
The Electrodeposition of High-Density, Ordered Arrays of Bi 1 - x Sb x Nanowires journal March 2003
Nucleophilic Displacement in the Oxidation of Iodide Ion by Dimethyl Sulfoxide journal January 1966

Cited By (1)

Correlating thermoelectric properties with microstructure in Bi 0.8 Sb 0.2 thin films journal April 2017