Synthesis and Luminescence Properties of Submicron K2SiF6∶Mn4+ Red Phosphor by Precipitation Method

被引：0

作者：

Zhang X. ^{[1
,2
]}

Song J. ^{[1
]}

Lei Y. ^{[2
]}

Shen L. ^{[1
]}

Zhang L. ^{[2
]}

机构：

[1] School of Science, Shenyang Ligong University, Shenyang

[2] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun

来源：

Faguang Xuebao/Chinese Journal of Luminescence | 2024年 / 45卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Mirco-LED; phosphor; submicron-size; synthesis;

D O I：

10.37188/CJL.20230262

中图分类号：

学科分类号：

摘要：

Sub-micrometer-sized K2SiF6∶Mn4+ phosphors hold transformative potential in the Micro-LED display in⁃ dustry. However，the synthesis of small-diameter K2SiF6∶Mn4+ phosphors remains a challenge due to immature tech⁃ nology，hindering efficient luminescence at the sub-micrometer scale. This paper introduces a novel method for syn⁃ thesizing sub-micrometer-sized K2SiF6∶Mn4+ phosphors via precipitation. Fluorescence spectroscopy analysis reveals that the phosphor displays typical Mn4+ red emission under 450 nm blue light excitation，with an internal quantum ef⁃ ficiency reaching 94. 9%. SEM observation indicates that the synthesized phosphor particles exhibit a size distribu⁃ tion between 150 nm and 450 nm. The phosphor demonstrates excellent thermal quenching performance，maintain⁃ ing 102% of the initial luminescence intensity at 443 K. A white LED was fabricated by combining green phosphor β-sialon∶Eu2+ and K2SiF6∶Mn4+ and applying it to a blue chip. The color gamut coverage achieved 133% NTSC，and the color temperature and color rendering index fluctuated by approximately 10% and 2% respectively when the driv⁃ ing current increased from 10 mA to 120 mA，indicating overall stable performance. This paper offers fresh insights into the synthesis of sub-micrometer-sized K2SiF6∶Mn4+ phosphors，contributing to the advancement of Micro-LED display technology. © 2024 Chines Academy of Sciences. All rights reserved.

引用

页码：94 / 102

页数：8

共 34 条

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