Electrostatic Mechanism of Emission Enhancement in Hybrid Metal-semiconductor Light-emitting Heterostructures Page: 17
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One of the primary results of this interaction is the production of LO phonon
replicas (PRs) in the PL emission spectrum. A PR is a secondary peak offset from the
main emission of the QW by the energy of one or more LO phonons. They arise due to
the emission or absorption of one or more LO phonons upon radiative recombination.
Since the phonon replicas depend on the energy and wavevector of the LO phonons
involved , they carry information about strain in the system, as the phonon energy is
dependent on the strain in the system . This feature can be made use of to allow us
to extract strain information from the QW's spectrum.
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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/m1/27/: accessed April 30, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .