Infrared emitting PbSe nanocrystals for telecommunications window applications

C. E. Finlayson, A. Amezcua, P. J.A. Sazio, P. S. Walker, M. C. Grossel, R. J. Curry, D. C. Smith, J. J. Baumberg

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


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
Issue number7
StatePublished - May 10 2005
Externally publishedYes


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