Post-graduate theses
Search command : Author="Στεφανίδης"
And Author="Κωνσταντίνος"
Current Record: 6 of 124
|
Identifier |
000460616 |
Title |
Fabrication and characterization of 2D halide perovskite crystals for polaritonic devices |
Alternative Title |
Παρασκευή και χαρακτηρισμός δισδιάστατων κρυστάλλων περοβσκίτη αλογονιδίου προς πολαριτονικές εφαρμογές |
Author
|
Χαιρέτης, Μίνωας
|
Thesis advisor
|
Σαββίδης, Παύλος
|
Reviewer
|
Στούμπος, Κων/νος
Πελεκάνος, Νικόλαος
|
Abstract |
The main aim of this work was to fabricate high quality thin 2D Halide perovskite crystals and
use them to demonstrate strong light-matter coupling in various device geometries. We
explored two alternative methods to fabricate crystals, namely, liquid exfoliation and solution
method. We characterized the material structure using XRD as well as microscope/SEM
techniques and employ optical measurements such as PL, Reflectivity, Power and Temperature
dependence, to characterize exciton emission properties in this material. Liquid exfoliation
method produced relatively small sized perovskite crystals not compatible with their
introduction inside wavelength sized cavity. The second method, provided us with the much
better results both in crystal size and structure as well as excitonic emission. Τhe successfully
optimized material was then incorporated inside optical cavity and on top of a Bragg reflector.
Large angle white light reflectivity measurements at room temperature revealed the appearance
of resonant mode residing at the surface of the Bragg mirror whose coupling with overlaying
perovskite excitons was studied. Finally, strong-light matter coupling at room temperature was
obtained when incorporating such crystals inside DBR mirror-based cavities demonstrating the
great promise these materials pose for real world polaritonic applications.
|
Language |
English |
Issue date |
2023-11-29 |
Collection
|
School/Department--School of Sciences and Engineering--Department of Materials Science and Technology--Post-graduate theses
|
|
Type of Work--Post-graduate theses
|
Permanent Link |
https://elocus.lib.uoc.gr//dlib/8/0/7/metadata-dlib-1701078939-429856-8945.tkl
|
Views |
1371 |