Skip to main content
University of North Dakota
University of North Dakota
    • Email
    • Blackboard
    • Campus Connection
    • Employee Self-Service (HRMS)
    • Starfish
    • Degree Map
  • Directory
  • Calendar
  • Scope of this search:
College of Arts & Sciences
College of Arts & Sciences
  • About
  • Academics
  • Current Students
  • Faculty & Staff
  • Research
University of North Dakota
  • About
  • Academics
  • Current Students
  • Faculty & Staff
  • Research
  • Request Info
  • Visit
  • Apply
Scope of this search:
  • Request Info
  • Visit
  • Apply
Scope of this search:
College of Arts & Sciences
  • Home
  • Academics
  • Physics & Astrophysics
  • Colloquia
  • 2015 16
  • Dr. Deniz Cakir
Skip Section Navigation
  • Physics & Astrophysics
  • Courses
  • Scholarships
  • Research
  • Faculty & Staff
  • News & Events
  • Colloquia Show/hide children
    • 2017-2018
    • 2015-2016
    • 2014-2015
    • 2013-2014
    • 2012-2013

Dr. Deniz Cakir

Deniz Cakir

Department of Physics,

University of Antwerp

Belgium

Electronic and optical properties of monolayer and few-layer black phosphorus: A DFT Perspective

Phosphorene, or monolayer black phosphorus, is a new 2D layered material with high carrier mobility and direct semiconducting band gap. One of the most interesting characters of phosphorene is highly anisotropic electronic and optical properties due to its anisotropic puckered atomic structure, making it a very promising material for electronics and optoelectronics applications.

In this talk, I will discuss the effect of strain and staking type on the electronic and optical properties of monolayer and few-layer black phosphorus by the help of density functional theory calculations. We find that the optical properties (i.e. absorption spectrum and exciton binding energy) and the electronic properties (i.e. band structure and effective mass) are highly anisotropic and strongly depend on the amount of applied strain in monolayer black phosphorus and type of staking in few-layer black phosphorus. Due to reduced dimensionality and weak screening, the calculated exciton binding energies are quite large and found to be in the range of 0.3-0.8 eV depending on applied strain and staking type. In addition, strain and type of staking are able to tune the electronic band gap and optical gap of black phosphorus by 1.5 eV. Such a wide tuning ability of the electronic band gap and optical gap allows us to design novel optoelectronic devices that capture a broad range of solar spectrum.

Department of Physics & Astrophysics
Witmer Hall Room 213
101 Cornell St Stop 7129
Grand Forks, ND 58202-7129
P 701.777.2911
physics@UND.edu
  • Facebook
We use cookies on this site to enhance your user experience.

By clicking any link on this page you are giving your consent for us to set cookies, Privacy Information.

College of Arts & Sciences

Columbia Hall, Room 1930
501 N Columbia Rd Stop 8038
Grand Forks, ND 58202-8038

UND.artssci@UND.edu |  701.777.2749
  • Instagram
  • Facebook
  • Twitter
  • LinkedIn
  • Library
  • Essential Studies
  • One-Stop
  • Registrar
  • Bookstore
  • Contact UND
  • Campus Map
  • Employment
  • Tech Support
  • Make a Gift
University of North Dakota

© 2022 University of North Dakota - Grand Forks, ND - Member of ND University System

  • Accessibility & Website Feedback
  • Terms of Use & Privacy
  • Notice of Nondiscrimination
  • Student Disclosure Information
  • Title IX
©