Spin-polarizable excitonic luminescence in colloidal mn 2+-doped CdSe quantum dots

Rémi Beaulac, Paul I. Archer, Xinyu Liu, Sang Hoon Lee, G. Mackay Salley, Margaret Dobrowolska, Jacek K. Furdyna, Daniel R. Gamelin

Research output: Contribution to journalArticle

142 Citations (Scopus)

Abstract

The photoluminescence of colloidal Mn 2+-doped CdSe nanocrystals has been studied as a function of nanocrystal diameter. These nanocrystals are shown to be unique among colloidal doped semiconductor nanocrystals reported to date in that quantum confinement allows tuning of the CdSe bandgap energy across the Mn 2+ excited-state energies. At small diameters, the nanocrystal photoluminescence is dominated by Mn 2+ emission. At large diameters, CdSe excitonic photoluminescence dominates. The latter scenario has allowed spin-polarized excitonic photoluminescence to be observed in colloidal doped semiconductor nanocrystals for the first time.

Original languageEnglish
Pages (from-to)1197-1201
Number of pages5
JournalNano Letters
Volume8
Issue number4
DOIs
Publication statusPublished - 2008 Apr 1

Fingerprint

Nanocrystals
Semiconductor quantum dots
Luminescence
nanocrystals
quantum dots
luminescence
Photoluminescence
photoluminescence
Semiconductor materials
Quantum confinement
Excited states
Energy gap
Tuning
tuning
energy
excitation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Beaulac, R., Archer, P. I., Liu, X., Lee, S. H., Salley, G. M., Dobrowolska, M., ... Gamelin, D. R. (2008). Spin-polarizable excitonic luminescence in colloidal mn 2+-doped CdSe quantum dots. Nano Letters, 8(4), 1197-1201. https://doi.org/10.1021/nl080195p

Spin-polarizable excitonic luminescence in colloidal mn 2+-doped CdSe quantum dots. / Beaulac, Rémi; Archer, Paul I.; Liu, Xinyu; Lee, Sang Hoon; Salley, G. Mackay; Dobrowolska, Margaret; Furdyna, Jacek K.; Gamelin, Daniel R.

In: Nano Letters, Vol. 8, No. 4, 01.04.2008, p. 1197-1201.

Research output: Contribution to journalArticle

Beaulac, R, Archer, PI, Liu, X, Lee, SH, Salley, GM, Dobrowolska, M, Furdyna, JK & Gamelin, DR 2008, 'Spin-polarizable excitonic luminescence in colloidal mn 2+-doped CdSe quantum dots', Nano Letters, vol. 8, no. 4, pp. 1197-1201. https://doi.org/10.1021/nl080195p
Beaulac R, Archer PI, Liu X, Lee SH, Salley GM, Dobrowolska M et al. Spin-polarizable excitonic luminescence in colloidal mn 2+-doped CdSe quantum dots. Nano Letters. 2008 Apr 1;8(4):1197-1201. https://doi.org/10.1021/nl080195p
Beaulac, Rémi ; Archer, Paul I. ; Liu, Xinyu ; Lee, Sang Hoon ; Salley, G. Mackay ; Dobrowolska, Margaret ; Furdyna, Jacek K. ; Gamelin, Daniel R. / Spin-polarizable excitonic luminescence in colloidal mn 2+-doped CdSe quantum dots. In: Nano Letters. 2008 ; Vol. 8, No. 4. pp. 1197-1201.
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