Critical synthesis parameters of β-phase Zn2SiO4:Mn2+ phosphor and its metastability

被引：6
|
作者：
Kang, T. [1 ]
Kang, H. [2 ]
Park, S. [2 ]
Deressa, G. [2 ,3 ]
Park, J. [2 ]
Kim, J. [1 ,2 ]
机构：
[1] Pukyong Natl Univ, Interdisciplinary Program LED & Solid State Light, Busan 48513, South Korea
[2] Pukyong Natl Univ, Dept Display Sci & Engn, Busan 48513, South Korea
[3] Adama Sci & Technol Univ, Sch Appl Nat Sci, Dept Appl Chem, Adama 1888, Ethiopia
来源：
MATERIALS TODAY COMMUNICATIONS | 2021年 / 26卷
基金：
新加坡国家研究基金会;
关键词：
Zinc silicate; Metastable phosphor; Crystal structure; Optical property; OPTICAL-PROPERTIES; NANOPARTICLES; PHOTOLUMINESCENCE; NANOPHOSPHORS; BETA-ZN2SIO4; LUMINESCENCE; EMISSION; GREEN;
D O I：
10.1016/j.mtcomm.2020.101798
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The metastable beta-phase Zn2SiO4:Mn2+ phosphor was successfully reproducible only under the following critical conditions: SiO2-rich stoichiometry, melting, and rapid cooling. The metastability of the beta-phase was demonstrated through the phase transformation of the as-grown beta-phase into the beta-phase polymorph by reannealing and then slowly cooling. The beta-phase showed yellow emission with a quantum efficiency of 65 %. The beta-phase has less crystalline structure caged into amorphous SiO2 phase and the more widely diffused larger grain sizes like a hexagonal shape of a snowflake. It showed the less thermal quenching behavior due to its lower lattice vibration, as well as the longer decay time due to less Mn2+ pairs.
引用
收藏
页数：6
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