Polarized emission in II-VI and perovskite colloidal quantum dots

The polarized emission of colloidal quantum dots from II-VI and perovskite semiconductors were investigated thoroughly, revealing information about the optical transitions in these materials and their potential use in various opto-electronic or spintronic applications. The studies included recording...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2017-11, Vol.50 (21), p.214001
Main Authors: Isarov, Maya, Tan, Liang Z, Tilchin, Jenya, Rabouw, Freddy T, Bodnarchuk, Maryna I, van Dijk-Moes, Relinde J A, Carmi, Rotem, Barak, Yahel, Kostadinov, Alyssa, Meir, Itay, Vanmaekelbergh, Daniel, Kovalenko, Maksym V, Rappe, Andrew M, Lifshitz, Efrat
Format: Article
Language:English
Subjects:
alloyed interfaces
blinking-free behavior
colloidal quantum dots
core/shell heterostructures
magneto-optical properties
perovskites
single dot spectroscopy
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Summary:The polarized emission of colloidal quantum dots from II-VI and perovskite semiconductors were investigated thoroughly, revealing information about the optical transitions in these materials and their potential use in various opto-electronic or spintronic applications. The studies included recording of the micro-photoluminescence of individual nanostructures at cryogenic temperatures, with or without the influence of an external magnetic field. The experimental conditions enabled detection of circular and/or linear polarized emission to elucidate the exciton manifolds, angular momentum of the emitting states, Landé g-factors, single exciton and bi-exciton binding energies, the excitons' effective Bohr radii, and the unique influence of the Rashba effect. The study advances the understanding of other phenomena such as electron-hole dissociation, long diffusion lengths, and spin coherence, facilitating appropriate design of optical and spin-based devices.
ISSN:0953-4075
1361-6455
DOI:10.1088/1361-6455/aa8dd4