Eu-doped barium strontium silicate phosphor particles prepared from spray solution containing NH4Cl flux by spray pyrolysis

Hee Sang Kang; Yun Chan Kang; Kyeong Youl Jung; Seung Bin Park

doi:10.1016/j.mseb.2005.03.013

Eu-doped barium strontium silicate phosphor particles prepared from spray solution containing NH₄Cl flux by spray pyrolysis

Hee Sang Kang, Yun Chan Kang, Kyeong Youl Jung, Seung Bin Park

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

57 Citations (Scopus)

Abstract

Eu-doped barium strontium silicate phosphor particles with high photoluminescence intensity under long wavelength ultraviolet were prepared from the spray solution containing NH₄Cl flux by spray pyrolysis. It was found that the addition of NH₄Cl to the spray solution makes it possible to greatly improve the photoluminescence intensity of Ba _1.488Sr_0.5SiO₄:Eu_0.012 phosphor particles under long wavelength ultraviolet of 410 nm. The highest photoluminescence intensity, which was achieved when the NH₄Cl content was 5 wt.%, was about 150% of Ba_1.488Sr_0.5SiO ₄:Eu_0.012 particles prepared from the spray solution without flux material at the post-treatment temperature of 1050°C. The particle size of Ba_1.488Sr_0.5SiO₄:Eu _0.012 phosphor particles were enlarged by using the NH₄Cl flux in the spray solution because of the large grain growth which was identified from the sharpening of the XRD peaks. Adding the NH₄Cl flux into the spray solution was found to lower the optimal post-treatment temperature at which the Ba_1.488Sr_0.5SiO ₄:Eu_0.012 phosphor particles are fully crystallized and have the maximum photoluminescence intensity. The phosphor particles prepared from spray solution containing 5 wt.% NH₄Cl flux had the maximum photoluminescence intensity at post-treatment temperature of 1100°C.

Original language	English
Pages (from-to)	81-85
Number of pages	5
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	121
Issue number	1-2
DOIs	https://doi.org/10.1016/j.mseb.2005.03.013
Publication status	Published - 2005 Jul 25
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the faculty research fund of Konkuk University in 2004.

Keywords

Flux
LED
Phosphor
Spray pyrolysis

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.mseb.2005.03.013

Cite this

Eu-doped barium strontium silicate phosphor particles prepared from spray solution containing NH₄Cl flux by spray pyrolysis. / Kang, Hee Sang; Kang, Yun Chan; Jung, Kyeong Youl et al.
In: Materials Science and Engineering B: Solid-State Materials for Advanced Technology, Vol. 121, No. 1-2, 25.07.2005, p. 81-85.

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

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abstract = "Eu-doped barium strontium silicate phosphor particles with high photoluminescence intensity under long wavelength ultraviolet were prepared from the spray solution containing NH4Cl flux by spray pyrolysis. It was found that the addition of NH4Cl to the spray solution makes it possible to greatly improve the photoluminescence intensity of Ba 1.488Sr0.5SiO4:Eu0.012 phosphor particles under long wavelength ultraviolet of 410 nm. The highest photoluminescence intensity, which was achieved when the NH4Cl content was 5 wt.%, was about 150% of Ba1.488Sr0.5SiO 4:Eu0.012 particles prepared from the spray solution without flux material at the post-treatment temperature of 1050°C. The particle size of Ba1.488Sr0.5SiO4:Eu 0.012 phosphor particles were enlarged by using the NH4Cl flux in the spray solution because of the large grain growth which was identified from the sharpening of the XRD peaks. Adding the NH4Cl flux into the spray solution was found to lower the optimal post-treatment temperature at which the Ba1.488Sr0.5SiO 4:Eu0.012 phosphor particles are fully crystallized and have the maximum photoluminescence intensity. The phosphor particles prepared from spray solution containing 5 wt.% NH4Cl flux had the maximum photoluminescence intensity at post-treatment temperature of 1100°C.",

keywords = "Flux, LED, Phosphor, Spray pyrolysis",

author = "Kang, {Hee Sang} and Kang, {Yun Chan} and Jung, {Kyeong Youl} and Park, {Seung Bin}",

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AU - Park, Seung Bin

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