Toward an Accurate Estimate of the Exfoliation Energy of Black Phosphorus: A Periodic Quantum Chemical Approach

Giuseppe Sansone*, Lorenzo Maschio, Denis Usvyat, Martin Schuetz, Antti Karttunen

*Tämän työn vastaava kirjoittaja

    Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

    35 Sitaatiot (Scopus)
    136 Lataukset (Pure)

    Abstrakti

    The black phosphorus (black-P) crystal is formed of covalently bound layers of phosphorene stacked together by weak van der Waals interactions. An experimental measurement of the exfoliation energy of black-P is not available presently, making theoretical studies the most important source of information for the optimization of phosphorene production. Here, we provide an accurate estimate of the exfoliation energy of black-P on the basis of multilevel quantum chemical calculations, which include the periodic local Moller-Plesset perturbation theory of second order, augmented by higher-order corrections, which are evaluated with finite clusters mimicking the crystal. Very similar results are also obtained by density functional theory with the D3-version of Grirnme's empirical dispersion correction. Our estimate of the exfoliation energy for black-P of -151 meV/atom is substantially larger than that of graphite, suggesting the need for different strategies to generate isolated layers for these two systems.

    AlkuperäiskieliEnglanti
    Sivut131-136
    Sivumäärä6
    JulkaisuJournal of Physical Chemistry Letters
    Vuosikerta7
    Numero1
    DOI - pysyväislinkit
    TilaJulkaistu - 7 tammikuuta 2016
    OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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