Homogeneously alloyed CdSxSe1-x nanocrystals: synthesis, characterization, and composition/size-dependent band gap.

Homogeneously alloyed CdSxSe1-x nanocrystals: synthesis, characterization, and composition/size-dependent band gap. Research Abstract Details 

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Homogeneously alloyed CdSxSe1-x nanocrystals: synthesis, characterization, and composition/size-dependent band gap. Abstract Text:

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,

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 CdS(x)Se(1-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.

Homogeneously alloyed CdSxSe1-x nanocrystals: synthesis, characterization, and composition/size-dependent band gap. Publishing Authors By Initials

LA Swafford,LA Weigand,MJ Bowers,JR McBride,JL Rapaport,TL Watt,SK Dixit,LC Feldman,SJ Rosenthal,

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Homogeneously alloyed CdSxSe1-x nanocrystals: synthesis, characterization, and composition/size-dependent band gap. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of the American Chemical Society

VOLUME: 128

Page Numbers: 12299-306

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ISSN: 0002-7863

DAY: 20

MONTH: Sep

YEAR: 2006

Homogeneously alloyed CdSxSe1-x nanocrystals: synthesis, characterization, and composition/size-dependent band gap. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Homogeneously alloyed CdSxSe1-x nanocrystals: synthesis, characterization, and composition/size-dependent band gap.

AFFILIATION: Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235-1822, USA.

Country: United States

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MEDLINETA: J Am Chem Soc

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