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Broadband orange-emitting Sr_(3)Si_(8)O_(4)N_(10):Eu^(2+)phosphor discovered by a modified single-particle-diagnosis approach

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Journal of Advanced Ceramics 2023年第4期12卷 734-746页

作者： Le Wang Guozhen Ding Shuxing Li shiro funahashi Takashi Takeda Lu Yin Pei Liang Naoto Hirosaki Rong-Jun Xie College of Optical and Electronic Technology China Jiliang UniversityHangzhou 310018China Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials College of MaterialsXiamen UniversityXiamen 361005China Phosphors Group National Institute for Materials ScienceTsukuba 305-0035Japan State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005China

Discovery of new phosphors with desired properties is of great significance for developing high optical quality solid-state *** single-particle-diagnosis approach is an effective way to search novel phosphors by analyzing tiny single crystals screened from the fired powder *** this work,a broadband orange-emitting phosphor of Sr(3)Si_(8)O_(4)N_(10):Eu^(2+)for solid state lighting was discovered by this *** new oxonitridosilicate crystallizes in the monoclinic space group of P2_(1)/n(No.14)with cell parameters of a=4.8185 A,b=24.2303 A,c=10.5611 A,β=90.616°,and Z=*** crystal structure of SrsSigO4Nio was determined from the single-crystal X-ray diffraction(XRD)data of a single crystal,which is made up of a three-dimensional framework consisting of vertex-sharing SiN_(4)and SiN_(3)O ***^(2+)ions occupy five crystallographic sites and have coordination numbers between 6 and 8 with one ordered Sr and other four disordered Sr *** multiple Sr sites lead to a broadband emission centered at 565-600 nm and a bandwidth of 128-138 *** internal and external quantum efficiencies(IQE/EQE)of the title phosphor are 48.6%and 29.1%under 450 nm excitation,*** improve the accuracy and speed of distinguishing phosphor particles in fired powder mixtures,a microscopic imaging spectroscopy is developed and demonstrated to modify the single-particle-diagnosis method.

关键词： oxonitridosilicate phosphor photoluminescence(PL) solid-state lighting imaging spectroscopy

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Single-particle-diagnosis approach： An efficient strategy for discovering new nitride phosphors

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Journal of Rare Earths 2018年第1期36卷 42-63页

作者： Xiaojun Wang Takashi Takeda Naoto Hirosaki shiro funahashi Rong-Jun Xie Jiangsu Key Laboratory of Advanced Laser Materials and Devices School of Physics and Electronic EngineeringJiangsu Normal University Xuzhou 221116 China Sialon Group Environment and Energy Materials DivisionNational Institute for Materials Science (NIMS)Namiki Tsukuba Ibaraki 305-0044 Japan College of Materials Xiamen UniversityXiamen 361005 China

Discovery of novel phosphors is extremely important to target the ever change of the solid state lighting technology. In this paper, we present a high-speed way to discover new phosphors, namely single- particle-diagnosis approach. This approach is based on investigating the crystal structure and lumines- cence of a tiny single crystal, without the necessity of the growth of large-size single crystals or the preparation of single phase powder samples. The concept of the approach and some new nitride phosphors explored by this approach are shown in this paper.

关键词： Solid state lightingsPhosphorsLuminescenceCrystal structureSingle-particle-diagnosis approach

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