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Title: Optical spectroscopy of single perovskite nanocrystals for quantum photonics
Authors: Mohamed-Raouf Amara
Keywords: Science::Physics::Optics and light
Science::Physics::Atomic physics::Solid state physics
Issue Date: 2023
Publisher: Nanyang Technological University
Source: Mohamed-Raouf Amara (2023). Optical spectroscopy of single perovskite nanocrystals for quantum photonics. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: Lead halide perovskites in their nanocrystal form have recently emerged as efficient quantum light emitters despite their low-temperature colloidal synthesis and structural lability. This has led to an intense debate about the band-edge exciton in these materials and the bright or dark character of the lowest energy exciton state. While symmetry arguments predict a lowest-lying dark exciton state, it was hypothesised that the combination of strong-spin orbit and structural instability should lead to a Rashba effect which places the bright exciton state below the dark exciton, in contrast with all other established materials. This work is a detailed study of single CsPbBr3, in the spectral and time domain, which provides critical information about the band-edge exciton fine structure. It should help the community refine theoretical models and converge towards an accurate description of the band-edge exciton of these fledgling materials, thus helping to shed light on their outstanding properties.
DOI: 10.32657/10356/164568
Schools: School of Physical and Mathematical Sciences 
Organisations: Sorbonne Université
Laboratoire de Physique de l'Ecole Normale Supérieure
Rights: This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Theses

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