Characteristics of MgO-coated alkaline earth selenide phosphor prepared by spray pyrolysis

Wonkeun Chung; Hyunchul Jung; Chang Hun Lee; Sung Hyun Kim

doi:10.1016/j.tsf.2013.05.028

Characteristics of MgO-coated alkaline earth selenide phosphor prepared by spray pyrolysis

Wonkeun Chung, Hyunchul Jung, Chang Hun Lee, Sung Hyun Kim

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

4 Citations (Scopus)

Abstract

Spherical submicron sized Eu²⁺-activated SrSe and CaSe alkaline earth selenide phosphorswere prepared by ultrasonic spray pyrolysis. The particle size decreased with decreasing precursor solution concentration, while the pyrolysis temperature had a negligible effect on the particles size and morphology. Due to the d-f transition of Eu²⁺, SrSe:Eu²⁺ and CaSe:Eu²⁺ showed the broad band emission with maximum peaks at 565 and 608 nm, respectively. Further, the addition of 10 wt% NH₄Cl flux helped to enhance the emission intensity by reducing the surface defects. MgO coating on selenide phosphor surface effectively improved the moisture stability without a significant loss in the luminescence intensity. 5-10 wt% MgO-coated SrSe: Eu²⁺, and CaSe:Eu²⁺ nearly retained their initial luminescence intensity under water condition.

Original language	English
Pages (from-to)	98-103
Number of pages	6
Journal	Thin Solid Films
Volume	546
DOIs	https://doi.org/10.1016/j.tsf.2013.05.028
Publication status	Published - 2013 Nov 1

Bibliographical note

Funding Information:
This work was supported by the Human Resources Development the Korea Institute of Energy Technology Evaluation and Planning ( 20114010203050 ) grant funded by the Korean government Ministry of Knowledge Economy.

Funding Information:
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1A2007908 ).

Keywords

Alkaline earth selenide
MgO coating
Phosphor
Spray pyrolysis

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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10.1016/j.tsf.2013.05.028

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title = "Characteristics of MgO-coated alkaline earth selenide phosphor prepared by spray pyrolysis",

abstract = "Spherical submicron sized Eu2+-activated SrSe and CaSe alkaline earth selenide phosphorswere prepared by ultrasonic spray pyrolysis. The particle size decreased with decreasing precursor solution concentration, while the pyrolysis temperature had a negligible effect on the particles size and morphology. Due to the d-f transition of Eu2+, SrSe:Eu2+ and CaSe:Eu2+ showed the broad band emission with maximum peaks at 565 and 608 nm, respectively. Further, the addition of 10 wt% NH4Cl flux helped to enhance the emission intensity by reducing the surface defects. MgO coating on selenide phosphor surface effectively improved the moisture stability without a significant loss in the luminescence intensity. 5-10 wt% MgO-coated SrSe: Eu2+, and CaSe:Eu2+ nearly retained their initial luminescence intensity under water condition.",

keywords = "Alkaline earth selenide, MgO coating, Phosphor, Spray pyrolysis",

author = "Wonkeun Chung and Hyunchul Jung and Lee, {Chang Hun} and Kim, {Sung Hyun}",

note = "Funding Information: This work was supported by the Human Resources Development the Korea Institute of Energy Technology Evaluation and Planning ( 20114010203050 ) grant funded by the Korean government Ministry of Knowledge Economy. Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1A2007908 ). ",

year = "2013",

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doi = "10.1016/j.tsf.2013.05.028",

language = "English",

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journal = "Thin Solid Films",

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AU - Chung, Wonkeun

AU - Jung, Hyunchul

AU - Lee, Chang Hun

AU - Kim, Sung Hyun

N1 - Funding Information: This work was supported by the Human Resources Development the Korea Institute of Energy Technology Evaluation and Planning ( 20114010203050 ) grant funded by the Korean government Ministry of Knowledge Economy. Funding Information: This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2012R1A1A2007908 ).

PY - 2013/11/1

Y1 - 2013/11/1

N2 - Spherical submicron sized Eu2+-activated SrSe and CaSe alkaline earth selenide phosphorswere prepared by ultrasonic spray pyrolysis. The particle size decreased with decreasing precursor solution concentration, while the pyrolysis temperature had a negligible effect on the particles size and morphology. Due to the d-f transition of Eu2+, SrSe:Eu2+ and CaSe:Eu2+ showed the broad band emission with maximum peaks at 565 and 608 nm, respectively. Further, the addition of 10 wt% NH4Cl flux helped to enhance the emission intensity by reducing the surface defects. MgO coating on selenide phosphor surface effectively improved the moisture stability without a significant loss in the luminescence intensity. 5-10 wt% MgO-coated SrSe: Eu2+, and CaSe:Eu2+ nearly retained their initial luminescence intensity under water condition.

AB - Spherical submicron sized Eu2+-activated SrSe and CaSe alkaline earth selenide phosphorswere prepared by ultrasonic spray pyrolysis. The particle size decreased with decreasing precursor solution concentration, while the pyrolysis temperature had a negligible effect on the particles size and morphology. Due to the d-f transition of Eu2+, SrSe:Eu2+ and CaSe:Eu2+ showed the broad band emission with maximum peaks at 565 and 608 nm, respectively. Further, the addition of 10 wt% NH4Cl flux helped to enhance the emission intensity by reducing the surface defects. MgO coating on selenide phosphor surface effectively improved the moisture stability without a significant loss in the luminescence intensity. 5-10 wt% MgO-coated SrSe: Eu2+, and CaSe:Eu2+ nearly retained their initial luminescence intensity under water condition.

KW - Alkaline earth selenide

KW - MgO coating

KW - Phosphor

KW - Spray pyrolysis

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DO - 10.1016/j.tsf.2013.05.028

M3 - Article

AN - SCOPUS:84885291916

SN - 0040-6090

VL - 546

SP - 98

EP - 103

JO - Thin Solid Films

JF - Thin Solid Films

ER -

Characteristics of MgO-coated alkaline earth selenide phosphor prepared by spray pyrolysis

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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