Infrared emitting PbSe nanocrystals for telecommunications window applications

C. E. Finlayson, Adrian Amezcua-Correa, P. J.A. Sazio*, P. S. Walker, M. C. Grossel, R. J. Curry, D. C. Smith, Jeremy J. Baumberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Citations (SciVal)

Abstract

We demonstrate the colloidal synthesis of PbSe nanocrystal quantum dots, via an organometallic-precursor route, developed from recently reported techniques. This synthesis typically yields a particle size distribution of approximately 5-10%, as may be inferred from the sharp spectral features seen in absorption and from our effective-mass model correlating spectral features to nanocrystal size. An accurate quantitative analysis, using an infrared reference dye, shows these nanocrystals to exhibit infrared photoluminescence from intrinsic quantum-confined states, with high quantum efficiencies of up to 60% in solution. The wavelength of the photoluminescence may also be conveniently size tuned in order to access the 1.3-1.5 μm 'telecommunications window'. We discuss the significance of this work in the context of future optoelectronic applications.

Original languageEnglish
Pages (from-to)955-964
Number of pages10
JournalJournal of Modern Optics
Volume52
Issue number7
DOIs
Publication statusPublished - 10 May 2005
Externally publishedYes

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