Homogeneously alloyed CdSxSe1-x nanocrystals

Synthesis, characterization, and composition/size-dependent band gap

Laura A. Swafford, Lauren A. Weigand, Michael J. Bowers, James R. McBride, Jason L. Rapaport, Tony L. Watt, Sriram K. Dixit, Leonard C Feldman, Sandra J. Rosenthal

Research output: Contribution to journalArticle

245 Citations (Scopus)

Abstract

Alloy nanocrystals provide an additional degree of freedom in selecting desirable properties for nanoscale engineering because their physical and optical properties depend on both size and composition. We report the pyrolytic synthesis of homogeneously alloyed CdSxSe1-x nanocrystals in all proportions. The nanocrystals are characterized using UV-visible absorption spectroscopy, transmission electron microscopy, X-ray diffractrometry, and Rutherford backscattering spectrometry to determine precisely structure, size, and composition. The dependence of band gap on nanocrystal size and composition is elucidated, yielding a bowing constant of 0.29, in agreement with bulk values. In addition, the morphology of the resultant nanocrystals can be altered by changing the reaction conditions, generating structures ranging from homogeneous, spherical nanocrystals to one-dimensional gradient nanorods.

Original languageEnglish
Pages (from-to)12299-12306
Number of pages8
JournalJournal of the American Chemical Society
Volume128
Issue number37
DOIs
Publication statusPublished - Sep 20 2006

Fingerprint

Nanoparticles
Nanocrystals
Energy gap
Chemical analysis
Spectrum Analysis
Nanotubes
Bending (forming)
Rutherford backscattering spectroscopy
Nanorods
Transmission Electron Microscopy
Absorption spectroscopy
Spectrometry
Optical properties
Physical properties
X-Rays
Transmission electron microscopy
X rays

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Swafford, L. A., Weigand, L. A., Bowers, M. J., McBride, J. R., Rapaport, J. L., Watt, T. L., ... Rosenthal, S. J. (2006). Homogeneously alloyed CdSxSe1-x nanocrystals: Synthesis, characterization, and composition/size-dependent band gap. Journal of the American Chemical Society, 128(37), 12299-12306. https://doi.org/10.1021/ja063939e

Homogeneously alloyed CdSxSe1-x nanocrystals : Synthesis, characterization, and composition/size-dependent band gap. / Swafford, Laura A.; Weigand, Lauren A.; Bowers, Michael J.; McBride, James R.; Rapaport, Jason L.; Watt, Tony L.; Dixit, Sriram K.; Feldman, Leonard C; Rosenthal, Sandra J.

In: Journal of the American Chemical Society, Vol. 128, No. 37, 20.09.2006, p. 12299-12306.

Research output: Contribution to journalArticle

Swafford, LA, Weigand, LA, Bowers, MJ, McBride, JR, Rapaport, JL, Watt, TL, Dixit, SK, Feldman, LC & Rosenthal, SJ 2006, 'Homogeneously alloyed CdSxSe1-x nanocrystals: Synthesis, characterization, and composition/size-dependent band gap', Journal of the American Chemical Society, vol. 128, no. 37, pp. 12299-12306. https://doi.org/10.1021/ja063939e
Swafford, Laura A. ; Weigand, Lauren A. ; Bowers, Michael J. ; McBride, James R. ; Rapaport, Jason L. ; Watt, Tony L. ; Dixit, Sriram K. ; Feldman, Leonard C ; Rosenthal, Sandra J. / Homogeneously alloyed CdSxSe1-x nanocrystals : Synthesis, characterization, and composition/size-dependent band gap. In: Journal of the American Chemical Society. 2006 ; Vol. 128, No. 37. pp. 12299-12306.
@article{5fb8c25c4e124fd494eebc479c1d4998,
title = "Homogeneously alloyed CdSxSe1-x nanocrystals: Synthesis, characterization, and composition/size-dependent band gap",
abstract = "Alloy nanocrystals provide an additional degree of freedom in selecting desirable properties for nanoscale engineering because their physical and optical properties depend on both size and composition. We report the pyrolytic synthesis of homogeneously alloyed CdSxSe1-x nanocrystals in all proportions. The nanocrystals are characterized using UV-visible absorption spectroscopy, transmission electron microscopy, X-ray diffractrometry, and Rutherford backscattering spectrometry to determine precisely structure, size, and composition. The dependence of band gap on nanocrystal size and composition is elucidated, yielding a bowing constant of 0.29, in agreement with bulk values. In addition, the morphology of the resultant nanocrystals can be altered by changing the reaction conditions, generating structures ranging from homogeneous, spherical nanocrystals to one-dimensional gradient nanorods.",
author = "Swafford, {Laura A.} and Weigand, {Lauren A.} and Bowers, {Michael J.} and McBride, {James R.} and Rapaport, {Jason L.} and Watt, {Tony L.} and Dixit, {Sriram K.} and Feldman, {Leonard C} and Rosenthal, {Sandra J.}",
year = "2006",
month = "9",
day = "20",
doi = "10.1021/ja063939e",
language = "English",
volume = "128",
pages = "12299--12306",
journal = "Journal of the American Chemical Society",
issn = "0002-7863",
publisher = "American Chemical Society",
number = "37",

}

TY - JOUR

T1 - Homogeneously alloyed CdSxSe1-x nanocrystals

T2 - Synthesis, characterization, and composition/size-dependent band gap

AU - Swafford, Laura A.

AU - Weigand, Lauren A.

AU - Bowers, Michael J.

AU - McBride, James R.

AU - Rapaport, Jason L.

AU - Watt, Tony L.

AU - Dixit, Sriram K.

AU - Feldman, Leonard C

AU - Rosenthal, Sandra J.

PY - 2006/9/20

Y1 - 2006/9/20

N2 - Alloy nanocrystals provide an additional degree of freedom in selecting desirable properties for nanoscale engineering because their physical and optical properties depend on both size and composition. We report the pyrolytic synthesis of homogeneously alloyed CdSxSe1-x nanocrystals in all proportions. The nanocrystals are characterized using UV-visible absorption spectroscopy, transmission electron microscopy, X-ray diffractrometry, and Rutherford backscattering spectrometry to determine precisely structure, size, and composition. The dependence of band gap on nanocrystal size and composition is elucidated, yielding a bowing constant of 0.29, in agreement with bulk values. In addition, the morphology of the resultant nanocrystals can be altered by changing the reaction conditions, generating structures ranging from homogeneous, spherical nanocrystals to one-dimensional gradient nanorods.

AB - Alloy nanocrystals provide an additional degree of freedom in selecting desirable properties for nanoscale engineering because their physical and optical properties depend on both size and composition. We report the pyrolytic synthesis of homogeneously alloyed CdSxSe1-x nanocrystals in all proportions. The nanocrystals are characterized using UV-visible absorption spectroscopy, transmission electron microscopy, X-ray diffractrometry, and Rutherford backscattering spectrometry to determine precisely structure, size, and composition. The dependence of band gap on nanocrystal size and composition is elucidated, yielding a bowing constant of 0.29, in agreement with bulk values. In addition, the morphology of the resultant nanocrystals can be altered by changing the reaction conditions, generating structures ranging from homogeneous, spherical nanocrystals to one-dimensional gradient nanorods.

UR - http://www.scopus.com/inward/record.url?scp=33748851902&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33748851902&partnerID=8YFLogxK

U2 - 10.1021/ja063939e

DO - 10.1021/ja063939e

M3 - Article

VL - 128

SP - 12299

EP - 12306

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

SN - 0002-7863

IS - 37

ER -