Electrostatic Mechanism of Emission Enhancement in Hybrid Metal-semiconductor Light-emitting Heterostructures Page: 82
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the plasmon energies for Au and Pt are well below the emission energy of ZnO,
enhancement due to coupling to plasmons should be ruled out
While I have done considerable work to demonstrate this effect, much work
remains to be done. Specifically, as mentioned above, more work needs to be done to
understand the interactions between the image charge effect and plasmons. A full
understanding should be able to explain the decrease in intensity of the Ag NP system
as well as possible situations in which constructive cooperation can occur between the
two mechanisms. Additionally, a significant amount of work needs to be done in order to
provide a model which accurately describes both the angle dependent measurements
as well as the changes to the electron-phonon coupling due to the image charge effect.
I plan on further investigating these effects both experimentally and theoretically via a
variety of techniques. From an applications standpoint, investigating the electronic
properties of the image charge effect is essential. Techniques such as
cathodoluminescence, photocurrent and electroluminescence measurements as well as
C-V and I-V measurements would go a long way towards providing an understanding of
the image charge effect in an electronic context.
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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/m1/92/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .