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Proceedings Paper

Photoluminescence dynamics at fast and slow time scale in PbSe nanocrystals
Author(s): Rafael Quintero-Torres; Jeff F. Young
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Paper Abstract

Photoluminescence as a function of time, wavelength and temperature is used to elucidate the relaxation of energy in PbSe as a function of the structural arrangement of the nanocrystals. The contribution of radiation emission, Förster exchange and nonradiative relaxation are accounted in processes from 77 to 300 K and in the wavelength from 1.65 to 1.20 um and in temporal scales from 1 ns to 10 us. Important contribution to the nonradiative relaxation with the mesoscopic arrangement of the nanocrystals and evidence of the Föster exchange independent of temperature and around 25 ns is measured. The general description of relaxation is used as well to correlate with the complex interaction between nanocrystals.

Paper Details

Date Published: 2 May 2014
PDF: 8 pages
Proc. SPIE 9126, Nanophotonics V, 912607 (2 May 2014); doi: 10.1117/12.2053463
Show Author Affiliations
Rafael Quintero-Torres, Univ. Nacional Autónoma de México (Mexico)
Jeff F. Young, The Univ. of British Columbia (Canada)

Published in SPIE Proceedings Vol. 9126:
Nanophotonics V
David L. Andrews; Jean-Michel Nunzi; Andreas Ostendorf, Editor(s)

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