Electrostatic Mechanism of Emission Enhancement in Hybrid Metal-semiconductor Light-emitting Heterostructures Page: 31
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100 The energy of a phonon replica
should be separated from the energy of
the main peak by an amount equal to
Sn hLoO . Furthermore we know that
the center of the phonon replica is
2.8 2.9 3.0 3.1 3.2 actually displaced from this value by an
Figure 3.7 PL Spectrum from an amount equal to 3/2 kT for the first
InGaN/GaN multi-QW using the fitting
model discussed in this section. The three phonon replica and 1/2 kT for the
solid Gaussians represent (from right to
left) the main QW peak and the two second phonon replica [29, 34]. We
phonon replicas. The dashed red line
represents the IHP QW peak. therefore use the following relation to
provide an initial estimate of the positions of the two replicas:
E3 - E2 - hLO +-kT
E4 = E2 - 2 hoL +- kT
We also add the constraint that the energy of the two peaks can vary from the initial
energy by no more than +/- 3/2 kT for the first replica and +/- 1/2 kT for the second.
The only thing left is to provide accurate starting guesses for the IHP peak and
the main peak of the QW. Due to the nature of the IHP QWs, we can assume that there
is some relation between the energy of the main QW and the IHP QW . Therefore it
is sensible to make an initial guess for the energy IHP QW that is relative to the main
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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/m1/41/: accessed April 27, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .