Journal of Luminescence, volume 227, pages 117526

IR luminescence mechanism in colloidal Ag2S quantum dots

Mikhail Smirnov ¹

O.V. Ovchinnikov ²

Hide authors affiliations Show authors affiliations: 2 affiliations

Voronezh State University of Engineering Technologies, 19 Revolution Av., 394036 Voronezh, Russia |

Department of Optics and Spectroscopy, Voronezh State University, 1 Universitetskaya Sq., 394006 Voronezh, Russia |

Publication type: Journal Article

Publication date: 2020-11-01

Elsevier

Journal: Journal of Luminescence

Quartile SCImago

Quartile WOS

Impact factor: 3.6

ISSN: 00222313

DOI: 10.1016/j.jlumin.2020.117526

Copy DOI

General Chemistry

Biochemistry

Biophysics

Atomic and Molecular Physics, and Optics

Condensed Matter Physics

Abstract

In the present paper, we discuss general features of luminescent properties for various samples of colloidal Ag 2 S quantum dots (QDs), passivated with thioglycolic (Ag 2 S/TGA) and 2-mercaptopropionic acids (Ag 2 S/2-MPA), L-cysteine (Ag 2 S/L-cys), and also Ag 2 S QDs stabilized in gelatin (Ag 2 S/Gel) and Poly(N-vinylpyrrolidone) (Ag 2 S/PVP). It was found that for all samples, the Stokes shift of the luminescence peak relative to ground state exciton absorption is greater than the exciton binding energy in Ag 2 S (0.096-0.104 eV). Moreover, the Stokes shift turned out to be caused by not only the quantum dot size but also by the type of the organic ligand. With decreasing the quantum dot size, the Stokes shift increases significantly. The estimates of the energy level shifts for electrons, holes, as well as the position of the luminescence peak, led us to a conclusion that trap state luminescence occurs. The specific luminescence mechanism is determined by the recombination of an electron trapped at the luminescence center with a free hole. It was found that decay of the trap state luminescence has non-exponential behavior. A model is proposed that explains the non-exponential luminescence decay. • Luminescent properties of colloidal Ag 2 S quantum dots were discussed. • The Stokes shift of luminescence is caused by the quantum dot size and ligand type. • The luminescence mechanism is the recombination of trapped electron with free hole.

By date By citations

Top-30

Citations by journals

	1 2 3 4
Journal of Luminescence	Journal of Luminescence, 4, 16% Journal of Luminescence 4 publications, 16%
RSC Advances	RSC Advances, 2, 8% RSC Advances 2 publications, 8%
Bulletin of the Russian Academy of Sciences: Physics	Bulletin of the Russian Academy of Sciences: Physics, 2, 8% Bulletin of the Russian Academy of Sciences: Physics 2 publications, 8%
Optical and Quantum Electronics	Optical and Quantum Electronics, 1, 4% Optical and Quantum Electronics 1 publication, 4%
Physica E: Low-Dimensional Systems and Nanostructures	Physica E: Low-Dimensional Systems and Nanostructures, 1, 4% Physica E: Low-Dimensional Systems and Nanostructures 1 publication, 4%
Journal of the Taiwan Institute of Chemical Engineers	Journal of the Taiwan Institute of Chemical Engineers, 1, 4% Journal of the Taiwan Institute of Chemical Engineers 1 publication, 4%
Physics of the Solid State	Physics of the Solid State, 1, 4% Physics of the Solid State 1 publication, 4%
Optics and Spectroscopy (English translation of Optika i Spektroskopiya)	Optics and Spectroscopy (English translation of Optika i Spektroskopiya), 1, 4% Optics and Spectroscopy (English translation of Optika i Spektroskopiya) 1 publication, 4%
Optical Materials Express	Optical Materials Express, 1, 4% Optical Materials Express 1 publication, 4%
Optics Express	Optics Express, 1, 4% Optics Express 1 publication, 4%
Journal of Nanoparticle Research	Journal of Nanoparticle Research, 1, 4% Journal of Nanoparticle Research 1 publication, 4%
Journal of the Korean Physical Society	Journal of the Korean Physical Society, 1, 4% Journal of the Korean Physical Society 1 publication, 4%
Herald of the Bauman Moscow State Technical University, Series Natural Sciences	Herald of the Bauman Moscow State Technical University, Series Natural Sciences, 1, 4% Herald of the Bauman Moscow State Technical University, Series Natural Sciences 1 publication, 4%
Thin Solid Films	Thin Solid Films, 1, 4% Thin Solid Films 1 publication, 4%
Bulletin of the Lebedev Physics Institute	Bulletin of the Lebedev Physics Institute, 1, 4% Bulletin of the Lebedev Physics Institute 1 publication, 4%
Inorganic Materials	Inorganic Materials, 1, 4% Inorganic Materials 1 publication, 4%
IEEE Access	IEEE Access, 1, 4% IEEE Access 1 publication, 4%
Russian Chemical Reviews	Russian Chemical Reviews, 1, 4% Russian Chemical Reviews 1 publication, 4%
Optical Materials	Optical Materials, 1, 4% Optical Materials 1 publication, 4%
	1 2 3 4

Citations by publishers

	1 2 3 4 5 6 7
Elsevier	Elsevier, 7, 28% Elsevier 7 publications, 28%
Pleiades Publishing	Pleiades Publishing, 5, 20% Pleiades Publishing 5 publications, 20%
Springer Nature	Springer Nature, 3, 12% Springer Nature 3 publications, 12%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 2, 8% Royal Society of Chemistry (RSC) 2 publications, 8%
Optical Society of America	Optical Society of America, 2, 8% Optical Society of America 2 publications, 8%
Taiwan Institute of Chemical Engineers	Taiwan Institute of Chemical Engineers, 1, 4% Taiwan Institute of Chemical Engineers 1 publication, 4%
Bauman Moscow State Technical University	Bauman Moscow State Technical University, 1, 4% Bauman Moscow State Technical University 1 publication, 4%
Allerton Press	Allerton Press, 1, 4% Allerton Press 1 publication, 4%
IEEE	IEEE, 1, 4% IEEE 1 publication, 4%
Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii	Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii, 1, 4% Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii 1 publication, 4%
	1 2 3 4 5 6 7

We do not take into account publications without a DOI.
Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
Statistics recalculated weekly.

{"yearsCitations":{"type":"bar","data":{"show":true,"labels":[2020,2021,2022,2023,2024],"ids":[0,0,0,0,0],"codes":[0,0,0,0,0],"imageUrls":["","","","",""],"datasets":[{"label":"Citations number","data":[2,1,9,9,4],"backgroundColor":["#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6"],"percentage":["8","4","36","36","16"],"barThickness":null}]},"options":{"indexAxis":"x","maintainAspectRatio":true,"scales":{"y":{"ticks":{"precision":0,"autoSkip":false,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":false},"x":{"ticks":{"stepSize":1,"precision":0,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":false}},"plugins":{"legend":{"position":"top","labels":{"font":{"family":"Montserrat"},"color":"#000000"}},"title":{"display":true,"text":"Citations per year","font":{"size":24,"family":"Montserrat","weight":600},"color":"#000000"}}}},"journals":{"type":"bar","data":{"show":true,"labels":["Journal of Luminescence","RSC Advances","Bulletin of the Russian Academy of Sciences: Physics","Optical and Quantum Electronics","Physica E: Low-Dimensional Systems and Nanostructures","Journal of the Taiwan Institute of Chemical Engineers","Physics of the Solid State","Optics and Spectroscopy (English translation of Optika i Spektroskopiya)","Optical Materials Express","Optics Express","Journal of Nanoparticle Research","Journal of the Korean Physical Society","Herald of the Bauman Moscow State Technical University, Series Natural Sciences","Thin Solid Films","Bulletin of the Lebedev Physics Institute","Inorganic Materials","IEEE Access","Russian Chemical Reviews","Optical Materials"],"ids":[7075,3100,21419,16789,13603,19382,11703,16531,9132,8923,546,9361,15556,17880,14160,7716,25260,23802,8290],"codes":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"imageUrls":["\/storage\/images\/resized\/GDnYOu1UpMMfMMRV6Aqle4H0YLLsraeD9IP9qScG_medium.webp","\/storage\/images\/resized\/leiAYcRDGTSl5B1eCnwpSGqmDEUEfDPPoYisFGhT_medium.webp","\/storage\/images\/resized\/oZgeErrVFhuDksyqFURLvYS1wtVSBWczh001igGo_medium.webp","\/storage\/images\/resized\/voXLqlsvTwv5p3iMQ8Dhs95nqB4AXOG7Taj7G4ra_medium.webp","\/storage\/images\/resized\/GDnYOu1UpMMfMMRV6Aqle4H0YLLsraeD9IP9qScG_medium.webp","","\/storage\/images\/resized\/oZgeErrVFhuDksyqFURLvYS1wtVSBWczh001igGo_medium.webp","\/storage\/images\/resized\/oZgeErrVFhuDksyqFURLvYS1wtVSBWczh001igGo_medium.webp","\/storage\/images\/resized\/bypZPcr6C4twKiQVCUCGc0GF4cH6aUWmpClD3hsH_medium.webp","\/storage\/images\/resized\/bypZPcr6C4twKiQVCUCGc0GF4cH6aUWmpClD3hsH_medium.webp","\/storage\/images\/resized\/voXLqlsvTwv5p3iMQ8Dhs95nqB4AXOG7Taj7G4ra_medium.webp","\/storage\/images\/resized\/voXLqlsvTwv5p3iMQ8Dhs95nqB4AXOG7Taj7G4ra_medium.webp","\/storage\/images\/resized\/fejPliZaU4fSt6bWTThCdvdqR7g5VxSC5XWwHoaq_medium.webp","\/storage\/images\/resized\/GDnYOu1UpMMfMMRV6Aqle4H0YLLsraeD9IP9qScG_medium.webp","\/storage\/images\/resized\/oZgeErrVFhuDksyqFURLvYS1wtVSBWczh001igGo_medium.webp","\/storage\/images\/resized\/oZgeErrVFhuDksyqFURLvYS1wtVSBWczh001igGo_medium.webp","\/storage\/images\/resized\/6scCJegesojp2jubwY3uKCzTAmgsaH2GIFlg6Hfk_medium.webp","\/storage\/images\/resized\/9Mus3KG1Tkd7Bwaurt8H3RwWh0CxRlGoO6ng9UK1_medium.webp","\/storage\/images\/resized\/GDnYOu1UpMMfMMRV6Aqle4H0YLLsraeD9IP9qScG_medium.webp"],"datasets":[{"label":"","data":[4,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],"backgroundColor":["#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6"],"percentage":[16,8,8,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4],"barThickness":13}]},"options":{"indexAxis":"y","maintainAspectRatio":false,"scales":{"y":{"ticks":{"precision":0,"autoSkip":false,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":false},"x":{"ticks":{"stepSize":null,"precision":0,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":false}},"plugins":{"legend":{"position":"top","labels":{"font":{"family":"Montserrat"},"color":"#000000"}},"title":{"display":true,"text":"Journals","font":{"size":24,"family":"Montserrat","weight":600},"color":"#000000"}}}},"publishers":{"type":"bar","data":{"show":true,"labels":["Elsevier","Pleiades Publishing","Springer Nature","Royal Society of Chemistry (RSC)","Optical Society of America","Taiwan Institute of Chemical Engineers","Bauman Moscow State Technical University","Allerton Press","IEEE","Autonomous Non-profit Organization Editorial Board of the journal Uspekhi Khimii"],"ids":[17,101,8,123,375,5505,7291,6983,6953,9422],"codes":[0,0,0,0,0,0,0,0,0,0],"imageUrls":["\/storage\/images\/resized\/GDnYOu1UpMMfMMRV6Aqle4H0YLLsraeD9IP9qScG_medium.webp","\/storage\/images\/resized\/oZgeErrVFhuDksyqFURLvYS1wtVSBWczh001igGo_medium.webp","\/storage\/images\/resized\/voXLqlsvTwv5p3iMQ8Dhs95nqB4AXOG7Taj7G4ra_medium.webp","\/storage\/images\/resized\/leiAYcRDGTSl5B1eCnwpSGqmDEUEfDPPoYisFGhT_medium.webp","\/storage\/images\/resized\/bypZPcr6C4twKiQVCUCGc0GF4cH6aUWmpClD3hsH_medium.webp","","\/storage\/images\/resized\/fejPliZaU4fSt6bWTThCdvdqR7g5VxSC5XWwHoaq_medium.webp","","\/storage\/images\/resized\/6scCJegesojp2jubwY3uKCzTAmgsaH2GIFlg6Hfk_medium.webp","\/storage\/images\/resized\/9Mus3KG1Tkd7Bwaurt8H3RwWh0CxRlGoO6ng9UK1_medium.webp"],"datasets":[{"label":"","data":[7,5,3,2,2,1,1,1,1,1],"backgroundColor":["#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6","#3B82F6"],"percentage":[28,20,12,8,8,4,4,4,4,4],"barThickness":13}]},"options":{"indexAxis":"y","maintainAspectRatio":false,"scales":{"y":{"ticks":{"precision":0,"autoSkip":false,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":false},"x":{"ticks":{"stepSize":null,"precision":0,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":false}},"plugins":{"legend":{"position":"top","labels":{"font":{"family":"Montserrat"},"color":"#000000"}},"title":{"display":true,"text":"Publishers","font":{"size":24,"family":"Montserrat","weight":600},"color":"#000000"}}}},"yearsCitationsQuartiles":{"type":"bar","data":{"show":true,"labels":[2020,2021,2022,2023,2024],"ids":[],"codes":[],"imageUrls":[],"datasets":[{"label":"Q4","backgroundColor":"rgb(221,90,78)","data":[0,0,2,1,0],"percentage":["0","0","8","4","0"]},{"label":"Q3","backgroundColor":"rgb(251, 163,83)","data":[0,0,2,3,0],"percentage":["0","0","8","12","0"]},{"label":"Q2","backgroundColor":"rgb(232, 213, 89)","data":[2,1,2,5,1],"percentage":["8","4","8","20","4"]},{"label":"Q1","backgroundColor":"rgb(164, 207, 99)","data":[0,0,2,0,3],"percentage":["0","0","8","0","12"]},{"label":"Quartile not defined","backgroundColor":"#E5E7EB","data":[0,0,1,0,0],"percentage":["0","0","4","0","0"]}]},"options":{"indexAxis":"x","maintainAspectRatio":true,"scales":{"y":{"ticks":{"precision":0,"autoSkip":false,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":true},"x":{"ticks":{"stepSize":1,"precision":0,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":true}},"plugins":{"legend":{"position":"top","labels":{"font":{"family":"Montserrat"},"color":"#000000"}},"title":{"display":true,"text":"Citations quartiles by SCImago per year","font":{"size":24,"family":"Montserrat","weight":600},"color":"#000000"}}}},"yearsCitationsQuartilesWs":{"type":"bar","data":{"show":true,"labels":[2020,2021,2022,2023,2024],"ids":[],"codes":[],"imageUrls":[],"datasets":[{"label":"Q4","backgroundColor":"rgb(221,90,78)","data":[0,0,2,3,0],"percentage":["0","0","8","12","0"]},{"label":"Q3","backgroundColor":"rgb(251, 163,83)","data":[0,0,0,1,1],"percentage":["0","0","0","4","4"]},{"label":"Q2","backgroundColor":"rgb(232, 213, 89)","data":[2,1,3,4,2],"percentage":["8","4","12","16","8"]},{"label":"Q1","backgroundColor":"rgb(164, 207, 99)","data":[0,0,1,0,1],"percentage":["0","0","4","0","4"]},{"label":"Quartile not defined","backgroundColor":"#E5E7EB","data":[0,0,3,1,0],"percentage":["0","0","12","4","0"]}]},"options":{"indexAxis":"x","maintainAspectRatio":true,"scales":{"y":{"ticks":{"precision":0,"autoSkip":false,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":true},"x":{"ticks":{"stepSize":1,"precision":0,"font":{"family":"Montserrat"},"color":"#000000"},"stacked":true}},"plugins":{"legend":{"position":"top","labels":{"font":{"family":"Montserrat"},"color":"#000000"}},"title":{"display":true,"text":"Citations quartiles by WoS per year","font":{"size":24,"family":"Montserrat","weight":600},"color":"#000000"}}}}}

Are you a researcher?

Create a profile to get free access to personal recommendations for colleagues and new articles.

Metrics

Cite this

GOST |

Cite this

GOST Copy

Smirnov M., Ovchinnikov O. IR luminescence mechanism in colloidal Ag2S quantum dots // Journal of Luminescence. 2020. Vol. 227. p. 117526.

GOST all authors (up to 50) Copy

Smirnov M., Ovchinnikov O. IR luminescence mechanism in colloidal Ag2S quantum dots // Journal of Luminescence. 2020. Vol. 227. p. 117526.

RIS |

Cite this

RIS Copy

TY - JOUR

DO - 10.1016/j.jlumin.2020.117526

UR - https://doi.org/10.1016/j.jlumin.2020.117526

TI - IR luminescence mechanism in colloidal Ag2S quantum dots

T2 - Journal of Luminescence

AU - Smirnov, Mikhail

AU - Ovchinnikov, O.V.

PY - 2020

DA - 2020/11/01 00:00:00

PB - Elsevier

SP - 117526

VL - 227

SN - 0022-2313

ER -

BibTex

Cite this

BibTex Copy

@article{2020_Smirnov,

author = {Mikhail Smirnov and O.V. Ovchinnikov},

title = {IR luminescence mechanism in colloidal Ag2S quantum dots},

journal = {Journal of Luminescence},

year = {2020},

volume = {227},

publisher = {Elsevier},

month = {nov},

url = {https://doi.org/10.1016/j.jlumin.2020.117526},

pages = {117526},

doi = {10.1016/j.jlumin.2020.117526}

}

Found error?

Publisher

Elsevier

Journal

Journal of Luminescence

Quartile SCImago

Quartile WOS

Impact factor

3.6

ISSN

00222313 (Print)