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Lead Sulfide Quantum Dot Synthesis, Deposition, And Temperature Dependence Studies Of The Stokes Shift

Joanna Wang, B. Ullrich, G. Brown
Published 2012 · Materials Science

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We investigated the temperature dependence of the Stokes shift of PbS quantum dots (diameter 4.7 nm) deposited from solution on glass using a specially designed apparatus. By measuring the thermal alteration of the optical absorbance and photoluminescence in the range of 5 K – 300 K, we demonstrate that the Stokes shift shrinks from 135 meV at 5 K to 62 meV at 300 K. Extrapolation of the data presented predict an elimination temperature of the Stokes shift of about 460 K, corresponding to the thermal energy of the sum of prominent PbS phonon energies.
This paper references
Temperature-dependent photoluminescence of PbS quantum dots in glass: Evidence of exciton state splitting and carrier trapping
Maxim S. Gaponenko (2010)
Steady state photoinduced absorption of PbS quantum dots film
J. Zhang (2008)
Anti-Stokes cooling in semiconductor nanocrystal quantum dots: A feasibility study
Y. Rakovich (2009)
Confinement-dependent below-gap state in PbS quantum dot films probed by continuous-wave photoinduced absorption.
J. Zhang (2008)
Semiconductors: Data Handbook
O. Madelung (2003)
Photoelectron spectroscopic investigations of chemical bonding in organically stabilized PbS nanocrystals.
A. Lobo (2005)
Radiative versus nonradiative optical processes in PbS nanocrystals
N. Dantas (2011)
Colloidal PbS Nanocrystals with Size-Tunable Near-Infrared Emission: Observation of Post-Synthesis Self-Narrowing of the Particle Size Distribution
M. Hines (2003)
Applicability of the empirical Varshni relation for the temperature dependence of the width of the band gap
I. Vainshtein (1999)
Temperature dependence of the photoluminescence emission from thiol-capped PbS quantum dots
L. Turyanska (2007)
Fluorescence spectroscopy of single lead sulfide quantum dots.
J. J. Peterson (2006)
Highly Photoluminescent PbS Nanocrystals: The Beneficial Effect of Trioctylphosphine
Keith A. Abel (2008)
Photoluminescence of PbS quantum dots on semi-insulating GaAs
B. Ullrich (2010)
Absorption and photoluminescence of PbS QDs in glasses
C. Liu (2009)
Analysis of thermal band gap variations of PbS quantum dots by Fourier transform transmission and emission spectroscopy
B. Ullrich (2011)
Highly efficient luminescence from a hybrid state found in strongly quantum confined PbS nanocrystals.
M. Fernée (2006)

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