Internal pressure effect on cathodoluminescence enhancement of ZnS:Mn2+ synthesized by a sealed vessel

B. J. Park, W. B. Im, W. J. Chung, H. S. Seo, J. T. Ahn, D. Y. Jeon

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

ZnS:Mn2+ phosphors were synthesized by a modified solid-state reaction method. In the synthesis method, a sealed vessel is used, where heat and pressure are simultaneously utilized. The effects of various synthesis conditions such as temperature, Mn concentration, and pressure on the cathodoluminescence (CL) were investigated. Among them, pressure had an effect on CL property as much as others. It was observed that CL intensities of ZnS:Mn2+ phosphors increased with the increase of pressure and the best sample showed higher intensity than that of a commercial one by 180%. X-ray diffraction (XRD) and electron paramagnetic-resonance (EPR) were used to understand the enhancement. No change of XRD patterns was observed but the full width at half-maximum (FWHM) of the most intense cubic (111) peak of ZnS:Mn2+ decreased with the increase of pressure. EPR signal intensity of Mn2+ increased with the increase of pressure. The improved crystallinity and more substitution of Zn2+ with Mn metal were believed to be responsible for the enhancement.

Original languageEnglish
Pages (from-to)2838-2844
Number of pages7
JournalJournal of Materials Research
Volume22
Issue number10
DOIs
StatePublished - 2007 Oct 1

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Pressure effects
Cathodoluminescence
internal pressure
pressure effects
cathodoluminescence
vessels
augmentation
Phosphors
phosphors
Paramagnetic resonance
electron paramagnetic resonance
X ray diffraction
synthesis
Full width at half maximum
Solid state reactions
Diffraction patterns
crystallinity
x rays
Substitution reactions
diffraction patterns

Cite this

Park, B. J. ; Im, W. B. ; Chung, W. J. ; Seo, H. S. ; Ahn, J. T. ; Jeon, D. Y. / Internal pressure effect on cathodoluminescence enhancement of ZnS:Mn2+ synthesized by a sealed vessel. In: Journal of Materials Research. 2007 ; Vol. 22, No. 10. pp. 2838-2844.
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Internal pressure effect on cathodoluminescence enhancement of ZnS:Mn2+ synthesized by a sealed vessel. / Park, B. J.; Im, W. B.; Chung, W. J.; Seo, H. S.; Ahn, J. T.; Jeon, D. Y.

In: Journal of Materials Research, Vol. 22, No. 10, 01.10.2007, p. 2838-2844.

Research output: Contribution to journalArticle

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AU - Im, W. B.

AU - Chung, W. J.

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AU - Ahn, J. T.

AU - Jeon, D. Y.

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