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Theory of Electronic and Optical Properties of Atomically Thin Films of Indium Selenide

  • Samuel J.¬†Magorrian
Book

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xii
  2. Samuel J. Magorrian
    Pages 1-11
  3. Samuel J. Magorrian
    Pages 13-33
  4. Samuel J. Magorrian
    Pages 35-60
  5. Samuel J. Magorrian
    Pages 61-81
  6. Samuel J. Magorrian
    Pages 83-84
  7. Back Matter
    Pages 85-87

About this book

Introduction

This thesis provides the first comprehensive theoretical overview of the electronic and optical properties of two dimensional (2D) Indium Selenide: atomically thin films of InSe ranging from monolayers to few layers in thickness. The thesis shows how the electronic propertes of 2D InSe vary significantly with film thickness, changing from a weakly indirect semiconductor for the monolayer to a direct gap material in the bulk form, with a strong band gap variation with film thickness predicted and recently observed in optical experiments. The proposed theory is based on a specially designed hybrid k.p tight-binding model approach (HkpTB), which uses an intralayer k.p Hamiltonian to describe the InSe monolayer, and tight-binding-like interlayer hopping. Electronic and optical absorption spectra are determined, and a detailed description of subbands of electrons in few-layer films and the influence of spin-orbit coupling is provided. The author shows that the principal optical excitations of InSe films with the thickness from 1 to 15 layers broadly cover the visible spectrum, with the possibility of extending optical functionality into the infrared and THz range using intersubband transitions.   


Keywords

Indium Selenide Optical Properties of thin films Tight-Binding Model K.P Theory 2D Materials Film thickness dependence

Authors and affiliations

  • Samuel J.¬†Magorrian
    • 1
  1. 1.National Graphene InstituteUniversity of ManchesterManchesterUK

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-030-25715-6
  • Copyright Information Springer Nature Switzerland AG 2019
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-030-25714-9
  • Online ISBN 978-3-030-25715-6
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
  • Buy this book on publisher's site
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