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Nitrogenated, phosphorated and arsenicated monolayer holey graphenes

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Date
2015-12
Author
Yağmurcukardeş, Mehmet
Horzum, Şeyda
Torun, Engin
Peeters, François M.
Senger, Ramazan Tuğrul
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Abstract
Motivated by a recent experiment that reported the synthesis of a new 2D material nitrogenated holey graphene (C2N) [Mahmood et al., Nat. Commun., 2015, 6, 6486], the electronic, magnetic, and mechanical properties of nitrogenated (C2N), phosphorated (C2P) and arsenicated (C2As) monolayer holey graphene structures are investigated using first-principles calculations. Our total energy calculations indicate that, similar to the C2N monolayer, the formation of the other two holey structures are also energetically feasible. Calculated cohesive energies for each monolayer show a decreasing trend going from the C2N to C2As structure. Remarkably, all the holey monolayers considered are direct band gap semiconductors. Regarding the mechanical properties (in-plane stiffness and Poisson ratio), we find that C2N has the highest in-plane stiffness and the largest Poisson ratio among the three monolayers. In addition, our calculations reveal that for the C2N, C2P and C2As monolayers, creation of N and P defects changes the semiconducting behavior to a metallic ground state while the inclusion of double H impurities in all holey structures results in magnetic ground states. As an alternative to the experimentally synthesized C2N, C2P and C2As are mechanically stable and flexible semiconductors which are important for potential applications in optoelectronics.
URI
https://doi.org/10.1039/c5cp05538e
http://hdl.handle.net/11147/5813
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DSpace@IZTECH is member of:

IZTECH Library, Gülbahçe Kampüsü - 35430 - Urla, İzmir / TURKEY
If you find any errors in content, please contact openaccess@iyte.edu.tr or library@iyte.edu.tr.

Creative Commons Lisansı
DSpace@IZTECH by IYTE Institutional repository is licensed under a Creative Commons Attribution-Gayriticari-NoDerivs 3.0 Unported License.


DSpace software copyright © 2002-2015  DuraSpace
Contact Us | Send Feedback
Theme by 
@mire NV