Effects of Electric Field on Electronic and Optical Properties of SnSe: A First-Principle Study
Electric field (E-field) effects on electric and optical properties of α-, β- and δ-SnSe have been investigated. Under the E-field, a tunable band gap of δ-SnSe appears, ranging from 2.23 to 1.26 eV. The band gap of β-SnSe could be mildly regulated by the E-field, just from 2.32 to 2.01 eV. For α-Sn...
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Published in | Integrated ferroelectrics Vol. 211; no. 1; pp. 167 - 174 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Philadelphia
Taylor & Francis
12.10.2020
Taylor & Francis Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | Electric field (E-field) effects on electric and optical properties of α-, β- and δ-SnSe have been investigated. Under the E-field, a tunable band gap of δ-SnSe appears, ranging from 2.23 to 1.26 eV. The band gap of β-SnSe could be mildly regulated by the E-field, just from 2.32 to 2.01 eV. For α-SnSe, the E-field has little effect on its band gap. We further find that the Sn-p and Se-p states mainly contribute to the variations of the band structures. Moreover, due to the application of the E-field, the absorption strength of α-SnSe in visible light might be enhanced. |
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ISSN: | 1058-4587 1607-8489 |
DOI: | 10.1080/10584587.2020.1803684 |