Size selective photoluminescence excitation spectroscopy in CdTe quantum dots

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal

6 Scopus Citations
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Author(s)

  • Yury Rakovich
  • Laura Walsh
  • Louise Bradley
  • John F. Donegan
  • Dmitri Talapin
  • Alexander Eychmüller

Detail(s)

Original languageEnglish
Pages (from-to)432-437
Journal / PublicationProceedings of SPIE - The International Society for Optical Engineering
Volume4876
Issue number1
Publication statusPublished - 2002
Externally publishedYes

Conference

TitleOpto-Ireland 2002: Optics and Photonics Technologies and Applications
PlaceIreland
CityGalway
Period5 - 6 September 2002

Abstract

We present a photoluminescence and photoluminescence excitation study of CdTe quantum dots, prepared via a novel organometallic approach. The global photoluminescence (excited at the energy above the absorption edge) showed a red shift of 75 meV with respect to the first absorption peak. This band edge emission was found to be strongly dependent on the excitation photon. Resonant emission spectra showed a pronounced spectral shift and line narrowing with decreasing excitation energy. The resonant Stokes shifts were extracted from photoluminescence and photoluminescence excitation data. The minimum magnitude of the resonant Stokes shift of 14 meV was obtained at room temperature.

Research Area(s)

  • CdTe, Luminescence, Nanocrystals, Quantum dots, Stokes shift

Citation Format(s)

Size selective photoluminescence excitation spectroscopy in CdTe quantum dots. / Rakovich, Yury; Walsh, Laura; Bradley, Louise; Donegan, John F.; Talapin, Dmitri; Rogach, Andrey; Eychmüller, Alexander.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 4876, No. 1, 2002, p. 432-437.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal