Persistent and Photostimulated Red Emission in CaS: Eu2+,Dy3+ Nanophosphors

Diana C. Rodríguez Burbano; Suchinder K. Sharma; Pieter Dorenbos; Bruno Viana; John A. Capobianco

doi:10.1002/adom.201400562

Persistent and Photostimulated Red Emission in CaS: Eu²⁺,Dy³⁺ Nanophosphors

Diana C. Rodríguez Burbano, Suchinder K. Sharma, Pieter Dorenbos, Bruno Viana, John A. Capobianco

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

161 Scopus citations

Abstract

The persistent and near-infrared photostimulated optical properties of CaS nanoparticles and CaS:Eu²⁺ and CaS:Eu²⁺,Dy³⁺ nanophosphors are presented. Proposed mechanisms are elucidated for both phenomena by carrying out wavelength-resolved, thermally stimulated luminescence (TSL) and photostimulated luminescence (PSL) measurements. After UV (254 nm) irradiation, blue persistent and near-infrared photostimulated luminescence is obtained due to the presence of intrinsic defects in CaS nanoparticles. By introducing Eu²⁺ as a dopant, the formation of shallow traps below the conduction band is observed and red persistent and near-infrared PSL is obtained. Dy³⁺ is added as a codopant to create shallow and near-infrared photostimulated deeper traps, lengthening the strong red persistent luminescence to 5 h and PSL time to 18 min.

Translated title of the contribution	Emisión roja persistente y fotoestimulada en CaS: Nanofosforos Eu2+,Dy3
Original language	English (US)
Pages (from-to)	551-557
Number of pages	7
Journal	Advanced Optical Materials
Volume	3
Issue number	4
DOIs	https://doi.org/10.1002/adom.201400562
State	Published - Apr 1 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/adom.201400562

Cite this

@article{764334aadeae4990bcf5e51a4e05c117,

title = "Persistent and Photostimulated Red Emission in CaS: Eu2+,Dy3+ Nanophosphors",

abstract = "The persistent and near-infrared photostimulated optical properties of CaS nanoparticles and CaS:Eu2+ and CaS:Eu2+,Dy3+ nanophosphors are presented. Proposed mechanisms are elucidated for both phenomena by carrying out wavelength-resolved, thermally stimulated luminescence (TSL) and photostimulated luminescence (PSL) measurements. After UV (254 nm) irradiation, blue persistent and near-infrared photostimulated luminescence is obtained due to the presence of intrinsic defects in CaS nanoparticles. By introducing Eu2+ as a dopant, the formation of shallow traps below the conduction band is observed and red persistent and near-infrared PSL is obtained. Dy3+ is added as a codopant to create shallow and near-infrared photostimulated deeper traps, lengthening the strong red persistent luminescence to 5 h and PSL time to 18 min.",

author = "\{Rodr{\'i}guez Burbano\}, \{Diana C.\} and Sharma, \{Suchinder K.\} and Pieter Dorenbos and Bruno Viana and Capobianco, \{John A.\}",

note = "Publisher Copyright: {\textcopyright} 2015 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim.",

year = "2015",

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doi = "10.1002/adom.201400562",

language = "English (US)",

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journal = "Advanced Optical Materials",

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publisher = "John Wiley \& Sons Inc.",

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TY - JOUR

T1 - Persistent and Photostimulated Red Emission in CaS

T2 - Eu2+,Dy3+ Nanophosphors

AU - Rodríguez Burbano, Diana C.

AU - Sharma, Suchinder K.

AU - Dorenbos, Pieter

AU - Viana, Bruno

AU - Capobianco, John A.

PY - 2015/4/1

Y1 - 2015/4/1

N2 - The persistent and near-infrared photostimulated optical properties of CaS nanoparticles and CaS:Eu2+ and CaS:Eu2+,Dy3+ nanophosphors are presented. Proposed mechanisms are elucidated for both phenomena by carrying out wavelength-resolved, thermally stimulated luminescence (TSL) and photostimulated luminescence (PSL) measurements. After UV (254 nm) irradiation, blue persistent and near-infrared photostimulated luminescence is obtained due to the presence of intrinsic defects in CaS nanoparticles. By introducing Eu2+ as a dopant, the formation of shallow traps below the conduction band is observed and red persistent and near-infrared PSL is obtained. Dy3+ is added as a codopant to create shallow and near-infrared photostimulated deeper traps, lengthening the strong red persistent luminescence to 5 h and PSL time to 18 min.

AB - The persistent and near-infrared photostimulated optical properties of CaS nanoparticles and CaS:Eu2+ and CaS:Eu2+,Dy3+ nanophosphors are presented. Proposed mechanisms are elucidated for both phenomena by carrying out wavelength-resolved, thermally stimulated luminescence (TSL) and photostimulated luminescence (PSL) measurements. After UV (254 nm) irradiation, blue persistent and near-infrared photostimulated luminescence is obtained due to the presence of intrinsic defects in CaS nanoparticles. By introducing Eu2+ as a dopant, the formation of shallow traps below the conduction band is observed and red persistent and near-infrared PSL is obtained. Dy3+ is added as a codopant to create shallow and near-infrared photostimulated deeper traps, lengthening the strong red persistent luminescence to 5 h and PSL time to 18 min.

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