These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A CO monolayer: first-principles design of a new direct band-gap semiconductor with excellent mechanical properties.
    Author: Teng ZW, Liu CS, Yan XH.
    Journal: Nanoscale; 2017 May 04; 9(17):5445-5450. PubMed ID: 28177026.
    Abstract:
    Group V monolayers, e.g., nitrogene, phosphorene, arsenene, and antimonene have recently emerged as attractive candidates for electronic and optoelectronic applications. However, these pristine monolayers are not able to possess direct band gaps suitable for ultraviolet-blue photoresponse. First-principles calculations show that the Pmma-CO monolayer has a direct band gap of 2.4 eV, and predict that the system has a good stability. Unlike an easy direct-indirect gap transition under small strains in phosphorene, the direct band gap feature of Pmma-CO is maintained under a strain up to 12%. Surprisingly, Pmma-CO shows excellent mechanical stability with an anisotropic in-plane stiffness up to 475.7 N m-1 along the b direction, which is higher than that of graphene. The in-plane hole carrier mobility is predicted to be 746.42 cm2 V-1 s-1, similar to that of black phosphorene. When synthesized, the Pmma-CO monolayer may have great potential in the design of new ultraviolet/blue optoelectronic devices.
    [Abstract] [Full Text] [Related] [New Search]