Induced electrostatic fields on optical gain in a polar quantum dot

N. Karthikeyan; A. John Peter; Chang Woo Lee

doi:10.1016/j.cplett.2020.138021

Induced electrostatic fields on optical gain in a polar quantum dot

N. Karthikeyan
, A. John Peter
, Chang Woo Lee

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Exciton binding energy, optical transition energy, emission wavelength and electrostatic built-in internal fields are studied with the various magnesium alloy compositions and the dot radii in ZnO/Zn_1−xMg_xO cylindrical quantum dot. The induced built-in internal electric fields are found to be around the order of MV/cm and the obtained values range from 0.41 to 1.5 MV/cm. The obtained values of internal fields are used to find the optical gain and it is found to be larger than GaN materials. The effects of adding Mg composition, the built-in internal fields and the spatial confinement have great influence on the exciton states.

Original language	English
Article number	138021
Journal	Chemical Physics Letters
Volume	760
DOIs	https://doi.org/10.1016/j.cplett.2020.138021
Publication status	Published - Dec 2020

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Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Exciton
Internal fields
Quantum dot

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10.1016/j.cplett.2020.138021

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@article{59d29f6704dd41718d7670af70873370,

title = "Induced electrostatic fields on optical gain in a polar quantum dot",

abstract = "Exciton binding energy, optical transition energy, emission wavelength and electrostatic built-in internal fields are studied with the various magnesium alloy compositions and the dot radii in ZnO/Zn1−xMgxO cylindrical quantum dot. The induced built-in internal electric fields are found to be around the order of MV/cm and the obtained values range from 0.41 to 1.5 MV/cm. The obtained values of internal fields are used to find the optical gain and it is found to be larger than GaN materials. The effects of adding Mg composition, the built-in internal fields and the spatial confinement have great influence on the exciton states.",

keywords = "Exciton, Internal fields, Quantum dot",

author = "N. Karthikeyan and \{John Peter\}, A. and \{Woo Lee\}, Chang",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = dec,

doi = "10.1016/j.cplett.2020.138021",

language = "English",

volume = "760",

journal = "Chemical Physics Letters",

issn = "0009-2614",

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TY - JOUR

T1 - Induced electrostatic fields on optical gain in a polar quantum dot

AU - Karthikeyan, N.

AU - John Peter, A.

AU - Woo Lee, Chang

PY - 2020/12

Y1 - 2020/12

N2 - Exciton binding energy, optical transition energy, emission wavelength and electrostatic built-in internal fields are studied with the various magnesium alloy compositions and the dot radii in ZnO/Zn1−xMgxO cylindrical quantum dot. The induced built-in internal electric fields are found to be around the order of MV/cm and the obtained values range from 0.41 to 1.5 MV/cm. The obtained values of internal fields are used to find the optical gain and it is found to be larger than GaN materials. The effects of adding Mg composition, the built-in internal fields and the spatial confinement have great influence on the exciton states.

AB - Exciton binding energy, optical transition energy, emission wavelength and electrostatic built-in internal fields are studied with the various magnesium alloy compositions and the dot radii in ZnO/Zn1−xMgxO cylindrical quantum dot. The induced built-in internal electric fields are found to be around the order of MV/cm and the obtained values range from 0.41 to 1.5 MV/cm. The obtained values of internal fields are used to find the optical gain and it is found to be larger than GaN materials. The effects of adding Mg composition, the built-in internal fields and the spatial confinement have great influence on the exciton states.

KW - Exciton

KW - Internal fields

KW - Quantum dot

UR - https://www.scopus.com/pages/publications/85091744016

U2 - 10.1016/j.cplett.2020.138021

DO - 10.1016/j.cplett.2020.138021

M3 - Article

AN - SCOPUS:85091744016

SN - 0009-2614

VL - 760

JO - Chemical Physics Letters

JF - Chemical Physics Letters

M1 - 138021

ER -

Induced electrostatic fields on optical gain in a polar quantum dot

Abstract

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Keywords

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