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Synthesis and structure of undoped and indium-doped thermoelectric lead telluride nanoparticles

Journal Article · · Nanoscale Research Letters (Online)
 [1];  [2];  [2];  [2];  [3];  [3]
  1. Florida International Univ., Miami, FL (United States). Dept. of Physics; DOE/OSTI
  2. Florida International Univ., Miami, FL (United States). Dept. of Physics
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Undoped and indium (In)-doped lead telluride (PbTe) nanostructures were synthesized via solvothermal/hydrothermal route. The crystalline structure of the as-prepared undoped and In-doped PbTe samples was examined by X-ray diffraction (XRD) which indicated the formation of face-centered single-phase cubic crystal. A first principle calculation on indium doping shows that the indium atoms are more likely to replace lead (Pb) rather than to take the interstitial sites. Laser-induced breakdown spectroscopy (LIBS) analysis confirms that indium is incorporated into the PbTe matrix of the indium-doped PbTe samples. The effects of surfactant and synthesis temperature on the structure and morphology of the undoped PbTe were also investigated; it was found that PbTe nanostructures synthesized with the addition of surfactants exhibited uniform shapes and their size increased with the synthesis temperature.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies (CINT)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
NA0003525
OSTI ID:
1626587
Journal Information:
Nanoscale Research Letters (Online), Journal Name: Nanoscale Research Letters (Online) Journal Issue: 1 Vol. 9; ISSN 1556-276X
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

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