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      https://www.ias.ac.in/article/fulltext/boms/044/0180

    • Keywords

       

      First-principles calculation; electronic and optical aspects; biaxial stress and strain.

    • Abstract

       

      In this article, a new two-dimensional nanostructure called GeP$_2$S, as an indirect bandgap semiconductor with rectangular atomic configuration, is introduced using simulation with computational codes based on density functional theory. The stability and structural properties of this nanostructure are theoretically investigated by comparing with previously studied similar structures. Our findings proved that GeP$_2$S monolayer indicates a good stability. The electronic aspects of GeP$_2$S monolayer in optimized state have been compared and presented by HSE06 and PBE-GGA approximation methods. Exploring the electronic properties shows that the proposed monolayer is an indirect semiconductor with a moderate bandgap of about 1.367 eV, calculated by HSE06 approximation method. The electronic and optical properties of this monolayer under effects of biaxial stress and strain up to 6% are investigated by PBE-GGA approximation method, and compared with the optimized state in order to represent and propose for upcoming experimental attempts to design the electro-optic applications and devices, especially in solar energy devices.

    • Author Affiliations

       

      HAMID REZA ALBORZNIA1 SEYED TAGHI MOHAMMADI

      1. Department of Physics, Center of Basic Science, Khatam ol-Anbia (PBU) University, 1781813513 Tehran, Iran
    • Dates

       
  • Bulletin of Materials Science | News

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      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

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      Posted on July 25, 2019

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