Size as a Parameter to Stabilize New Phases

Rock Salt Phases of PbmSb2nSem+3n

Ronald B. Soriano, Jinsong Wu, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A series of PbmSb2nSem+3n nanocrystals (m = 2, 4, 6 and 8; n = 1) are demonstrated that exist only as a distinct phase on the nanoscale. The nanocrystals aggregates are new compounds adopting the cubic NaCl-type structure. These materials form aggregates comprised of nanocrystallites that are attached at a preferred orientation. Elemental compositions were studied using the complementary techniques of scanning transmission electron microscopy/energy dispersive X-ray spectroscopy and inductively coupled plasma-atomic emission spectroscopy. The new ternary nanocrystal aggregates are moderately monodisperse and exhibit well-defined band gap energies in the mid-IR region. The PbmSb2nSem+3n nanomaterials behave as homogeneous solid solutions with lattice parameter trending as a function of Sb incorporation at room temperature and tend to phase separate into PbSe and Sb2Se3 at 400 °C. (Figure Presented).

Original languageEnglish
Pages (from-to)9937-9942
Number of pages6
JournalJournal of the American Chemical Society
Volume137
Issue number31
DOIs
Publication statusPublished - Aug 12 2015

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Nanoparticles
Nanocrystals
Salts
Rocks
X-Ray Emission Spectrometry
Atomic emission spectroscopy
Atomic Spectrophotometry
Nanocrystallites
Scanning Transmission Electron Microscopy
Nanostructures
Inductively coupled plasma
Nanostructured materials
Lattice constants
Solid solutions
Energy gap
Transmission electron microscopy
Scanning electron microscopy
Temperature
Chemical analysis
lead selenide

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis
  • Biochemistry
  • Colloid and Surface Chemistry

Cite this

Size as a Parameter to Stabilize New Phases : Rock Salt Phases of PbmSb2nSem+3n. / Soriano, Ronald B.; Wu, Jinsong; Kanatzidis, Mercouri G.

In: Journal of the American Chemical Society, Vol. 137, No. 31, 12.08.2015, p. 9937-9942.

Research output: Contribution to journalArticle

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