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Proceedings Paper

Size-selective photoluminescence excitation spectroscopy in CdTe quantum dots
Author(s): Yury Rakovich; Laura Walsh; Louise Bradley; John F. Donegan; Dmitri Talapin; Andrey Rogach; Alexander Eychmueller
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Paper 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.

Paper Details

Date Published: 27 August 2003
PDF: 6 pages
Proc. SPIE 4876, Opto-Ireland 2002: Optics and Photonics Technologies and Applications, (27 August 2003); doi: 10.1117/12.463693
Show Author Affiliations
Yury Rakovich, Trinity College Dublin (Ireland)
Laura Walsh, Trinity College Dublin (Ireland)
Louise Bradley, Trinity College Dublin (Ireland)
John F. Donegan, Trinity College Dublin (Ireland)
Dmitri Talapin, Univ. of Hamburg (Germany)
Andrey Rogach, Univ. of Hamburg (Germany)
Alexander Eychmueller, Univ. of Hamburg (Germany)

Published in SPIE Proceedings Vol. 4876:
Opto-Ireland 2002: Optics and Photonics Technologies and Applications
Vincent Toal; Norman Douglas McMillan; Gerard M. O'Connor; Eon O'Mongain; Austin F. Duke; John F. Donegan; James A. McLaughlin; Brian D. MacCraith; Werner J. Blau, Editor(s)

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