Optoelectronic Properties of Excitonic and Biexcitonic Complexes in Metal Chalcogenide Semiconductor Nanoplatelets

Author

Macias Pinilla, David Francisco

Director

Mora Seró, Iván

Climente Plasencia, Juan Ignacio

Tutor

Mora Seró, Iván

Date of defense

2022-11-14

Pages

244 p.



Department/Institute

Universitat Jaume I. Escola de Doctorat

Doctorate programs

Programa de Doctorat en Ciències

Abstract

Nanoplatelets (NPLs) are of particular interest for their unique properties, they have a precisely controlled thickness of a few atomic monolayers (MLs), and lateral dimensions ranging from hundreds of nm to few nms, where quantum confinement is already felt. Additionally, NPLs are surrounded by organic ligands with weak polarizability, thus exerting a strong dielectric confine- ment that, together with the quantum confinement, serves to modulate the optical properties. The main objective of this PhD work is to study at a theoretical level the optoelectronic properties of excitonic and biexcitonic complexes in semiconductor core-only PbS and CdSe NPLs. To this end, we shall analyze the electronic structure of exciton complexes confined inside, and the resulting optical spectrum. We address through density functional theory (DFT) and k·p theory, coupled to variational and variational quantum Monte Carlo (VQMC) methods, some of the open questions that currently exist about the NPLs electronic nature.

Keywords

Nanoplatelet; K.p theory; Dielectric Confinement; Quantum Confinement; Quantum Monte Carlo; Optical properties; Nanoplaquetas semiconductoras; Confinamiento dieléctrico; Confinamiento cuántico; Propiedades ópticas

Subjects

53 - Physics

Knowledge Area

Ciències

Note

Compendi d'articles.

Documents

2022_Tesis_Macias Pinilla_David F..pdf

27.02Mb

 

Rights

L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: https://creativecommons.org/licenses/by-sa/3.0/es/
L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: https://creativecommons.org/licenses/by-sa/3.0/es/

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