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HRTEM images of starting PbS QDs (a) and nanohybrid composites (b), UV-visible-NIR spectra of PbS QDs and nanohybrid composites (c); calculated transition energies of PbS QDs and their Gaussian broadening fitting (d). is defined as , where , , is the radius of QDs, is the root of the spherical Bessel function of order, , and is the effective mass of electron (or hole).
Time-resolved transient change in transmission measured in PbS QDs and nanohybrid composites with pulsed excitation at .
Illustration of resonant energy transfer by Auger process.
Fitting parameters based on double-exponential decay: .
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