Journal of Luminescence, volume 155, pages 359-367

Effect of thermal annealing on dual photoluminescence emission characteristics of chemically synthesized uncapped Mn2+ doped ZnS quantum dots

Arup Kanti Kole ¹

K. Chattopadhyay ²

P. Kumbhakar P. Kumbhakar ¹

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Nanoscience Laboratory, Dept. of Physics, National Institute of Technology, Durgapur 713209, West Bengal, India |

Department of Materials Engineering, Indian Institute of Science, Bangalore (India) |

Publication type: Journal Article

Publication date: 2014-11-01

Elsevier

Journal: Journal of Luminescence

Quartile SCImago

Quartile WOS

Impact factor: 3.6

ISSN: 00222313

DOI: 10.1016/j.jlumin.2014.07.004

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General Chemistry

Biochemistry

Biophysics

Atomic and Molecular Physics, and Optics

Condensed Matter Physics

Abstract

Dual photoluminescence (PL) emission characteristics of Mn2+ doped ZnS (ZnS:Mn) quantum dots (QDs) have drawn a lot of attention recently. However, here we report the effect of thermal annealing on the PL emission characteristics of uncapped ZnS:Mn QDs of average sizes similar to 2-3 nm, synthesized by simple chemical precipitation method by using de-ionized (DI) water at room temperature. As-synthesized samples show dual PL emissions, having one UV PL band centred at similar to 400 nm and the other in the visible region similar to 610 nm. But when the samples are isochronally annealed for 2 h at 100-600 degrees C temperature range in air, similar to 90% quenching of Mn2+ related visible PL emission intensity takes place at the annealing temperature of 600 degrees C. X-ray diffraction data show that the as-synthesized cubic ZnS has been converted to wurtzite ZnO at 600 degrees C annealing temperature. The nanostructural properties of the samples are also determined by transmission electron micrograph, electron probe micro-analyser and UV-vis spectrophotometry. The photocatalytic property of the annealed ZnS:Mn sample has been demonstrated and photo-degradation efficiency of the as-synthesized and 600 degrees C annealed ZnS:Mn sample has been found out to be similar to 35% and similar to 61%, respectively, for the degradation of methylene blue dye under visible light irradiation. The synthesized QDs may find significant applications in future optoelectronic devices. (C) 2014 Elsevier B.V. All rights reserved.

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Chemical Physics Letters	Chemical Physics Letters, 1, 6.25% Chemical Physics Letters 1 publication, 6.25%
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Russian Chemical Reviews	Russian Chemical Reviews, 1, 6.25% Russian Chemical Reviews 1 publication, 6.25%
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	2 4 6 8 10
Elsevier	Elsevier, 10, 62.5% Elsevier 10 publications, 62.5%
American Institute of Physics (AIP)	American Institute of Physics (AIP), 2, 12.5% American Institute of Physics (AIP) 2 publications, 12.5%
Springer Nature	Springer Nature, 1, 6.25% Springer Nature 1 publication, 6.25%
Wiley	Wiley, 1, 6.25% Wiley 1 publication, 6.25%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii	Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii, 1, 6.25% Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii 1 publication, 6.25%
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Kanti Kole A., Chattopadhyay K., P. Kumbhakar P. K. Effect of thermal annealing on dual photoluminescence emission characteristics of chemically synthesized uncapped Mn2+ doped ZnS quantum dots // Journal of Luminescence. 2014. Vol. 155. pp. 359-367.

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TY - JOUR

DO - 10.1016/j.jlumin.2014.07.004

UR - https://doi.org/10.1016/j.jlumin.2014.07.004

TI - Effect of thermal annealing on dual photoluminescence emission characteristics of chemically synthesized uncapped Mn2+ doped ZnS quantum dots

T2 - Journal of Luminescence

AU - Kanti Kole, Arup

AU - Chattopadhyay, K.

AU - P. Kumbhakar, P. Kumbhakar

PY - 2014

DA - 2014/11/01 00:00:00

PB - Elsevier

SP - 359-367

VL - 155

SN - 0022-2313

ER -

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@article{2014_Kanti Kole,

author = {Arup Kanti Kole and K. Chattopadhyay and P. Kumbhakar P. Kumbhakar},

title = {Effect of thermal annealing on dual photoluminescence emission characteristics of chemically synthesized uncapped Mn2+ doped ZnS quantum dots},

journal = {Journal of Luminescence},

year = {2014},

volume = {155},

publisher = {Elsevier},

month = {nov},

url = {https://doi.org/10.1016/j.jlumin.2014.07.004},

pages = {359--367},

doi = {10.1016/j.jlumin.2014.07.004}

}

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Publisher

Elsevier

Journal

Journal of Luminescence

Quartile SCImago

Quartile WOS

Impact factor

3.6

ISSN

00222313 (Print)