Coarsening kinetics of Mn-doped CdSe nanocrystals

Yun Mo Sung, Woo Chul Kwak, Tae Geun Kim

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

CdSe and Mn-doped CdSe nanocrystals were synthesized by the inverse micelle technique using paraffin oil and oleic acid, and they were found to be highly crystalline with the zinc blende structure. The coarsening behavior of the nanocrystals was monitored using the red-shift in UV-visible light absorption peaks, and their size variation was estimated using the quantum confinement theory. The size values were used for the Lifshitz-Slyozov-Wagner (LSW) analyses for the coarsening kinetics. By determining the activation energy (Q) and reaction rate constant (Ko), the coarsening mechanism was identified as surface diffusion of atoms, and the kinetics equation could be completed for both nanocrystals. The Mn-doped CdSe nanocrystals showed faster coarsening kinetics due to the low activation energy barrier for the diffusion.

Original languageEnglish
Pages (from-to)1186-1190
Number of pages5
JournalCrystal Growth and Design
Volume8
Issue number4
DOIs
Publication statusPublished - 2008 Apr 1

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Coarsening
Nanocrystals
nanocrystals
Kinetics
kinetics
Activation energy
Paraffin oils
activation energy
Quantum confinement
oleic acid
Surface diffusion
Oleic acid
Energy barriers
Micelles
paraffins
Oleic Acid
electromagnetic absorption
surface diffusion
kinetic equations
red shift

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Coarsening kinetics of Mn-doped CdSe nanocrystals. / Sung, Yun Mo; Kwak, Woo Chul; Kim, Tae Geun.

In: Crystal Growth and Design, Vol. 8, No. 4, 01.04.2008, p. 1186-1190.

Research output: Contribution to journalArticle

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