Electrostatic Mechanism of Emission Enhancement in Hybrid Metal-semiconductor Light-emitting Heterostructures Page: 68
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Table 5.1 Decay constants and ratio of amplitudes of the radiative to non-radiative
components of decay.
It turns out that the lifetimes in the two systems are essentially unchanged.
Instead the decreased rate of decay occurs due to a change in the ratio of radiative to
non-radiative recombination. This change in ratio is evidence of the increase in IQE due
to the presence of the Au NP.
5.5 Power Saturation and Screening
In our model, I have assumed that carriers are able to be attracted to their image
charges, and neglected any interactions between the carriers. While scattering and
other many-body interactions are likely to play a role in carrier dynamics in the high
0 2000 4000 0 2000 4000
Distance (nm) Distance (nm)
Figure 5.4 a, The carrier concentration as a function of time for the Au NP system.
b, The same for the reference system. In both plots the concentration has been
normalized so that p(5,0)=1.
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Llopis, Antonio. Electrostatic Mechanism of Emission Enhancement in Hybrid Metal-semiconductor Light-emitting Heterostructures, dissertation, May 2012; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc115113/m1/78/: accessed March 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .