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

* Honorary professors

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

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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@article{b057337fc35645749339297b23594392,

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",

month = nov,

day = "1",

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

language = "English",

volume = "546",

pages = "98--103",

journal = "Thin Solid Films",

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T1 - Characteristics of MgO-coated alkaline earth selenide phosphor prepared by spray pyrolysis

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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U2 - 10.1016/j.tsf.2013.05.028

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

Keywords

ASJC Scopus subject areas

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