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Raad Chegel

Raad Chegel

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId:
HIndex: 0/00
Faculty: science
Address: Malayer University
Phone: 09188899031

Research

Title
Theoretical study of the influence of the electric field on the electronic properties of armchair boron nitride nanoribbon
Type
JournalPaper
Keywords
Nanostructures; Semiconductors; Electronic structure; Optical properties
Year
2014
Journal PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
DOI
Researchers Raad Chegel

Abstract

We have investigated the electronic properties of A-BNNRs in the external electric field using third nearest neighbor tight binding approximation including edge effects. We found that the dependence of on-site energy to the external electric field for edge atoms and center part atoms is different. By comparing the band structure in the different fields, several differences are clearly seen such as modification of energy dispersions, creation of additional band edge states and band gap reduction. By increasing the electric field the band gap reduces linearly until reaches zero and BNNRs with larger width are more sensitive than small ones. All changes in the band structure are directly reflected in the DOS spectrum. The numbers and the energies of the DOS peaks are dependent on the electric field strength.