Synthesis and Characteristics of SrAl2O4: Eu2+,  Dy3+ Long Afterglow Phosphors by Polymerized Complex Method

Tae-Ho Kim; Hae-Jin Hwang; Jin-Ho Kim; Kwang-Taek Hwang; Kyu-Sung Han

doi:10.3740/MRSK.2016.26.10.561

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Synthesis and Characteristics of SrAl₂O₄: Eu²⁺, Dy³⁺ Long Afterglow Phosphors by Polymerized Complex Method 착체중합법을 이용한 SrAl₂O₄: Eu²⁺, Dy³⁺ 축광성 형광체의 합성

October 2016. pp. 561-569

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Abstract

SrAl₂O₄: Eu²⁺ and Dy³⁺ phosphorescent phosphors were synthesized using the polymerized complex method. Generally, phosphorescent phosphors synthesized by conventional solid state reaction show a micro-sized particle diameter; thus, this process is restricted to applications such as phosphorescent ink and paint. However, it is possible to synthesize homogeneous multi-component powders with fine particle diameter by wet process such as the polymerized complex method. The characteristics of SrAl₂O₄: Eu²⁺ and Dy³⁺ powders prepared by polymerized complex method with one and two step calcination processes were comparatively analyzed. Temperatures of organic material removal and crystallization were observed through TG-DTA analysis. The crystalline phase and crystallite size of the SrAl₂O₄: Eu²⁺ and Dy³⁺ phosphorescent phosphors were analyzed by XRD. Microstructures and afterglow characteristics of the SrAl₂O₄: Eu²⁺ and Dy³⁺ phosphors were measured by SEM and spectrofluorometry, respectively.

Keywords

SrAl₂O₄: Eu²⁺

Dy³⁺

phosphorescence

long afterglow phosphor

polymerized complex method

raw material

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 26
No :10
Pages :561-569
Received Date : 2016-07-04
Revised Date : 2016-07-04
Accepted Date : 2016-09-08
DOI :https://doi.org/10.3740/MRSK.2016.26.10.561

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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