Screened Coulomb hybrid density functional investigation of oxygen point defects on ZnO nanowires

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Tarih

2018

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Elsevier

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

In this study, oxygen vacancies and adatoms have been considered on the surface of both hexagonal anssd triangular ZnO nanowires. Their effect on the electronic structure and optical spectra of the nanowires have been investigated using the exact exchange hybrid density functional theory calculations. A surface oxygen vacancy gives rise to appearance of a band gap state at almost 0.7 eV above the valence band of the both types of the nanowires while an oxygen adatom show bulk-like electronic properties. A shape dependence is also indicated by the calculated physical quantities of oxygen related point defects on ZnO nanowires. (C) 2018 Elsevier B.V. All rights reserved.

Açıklama

Anahtar Kelimeler

Kaynak

Computational Condensed Matter

WoS Q Değeri

N/A

Scopus Q Değeri

Q2

Cilt

16

Sayı

Künye