用于白光发光二极管的双取代诱导Ca(Mg0.8, Al0.2)(Si1.8, Al0.2)O6:Eu(2+)荧光粉：合成、结构及发光性能

A double substitution induced Ca(Mg0.8, Al0.2)(Si1.8, Al0.2)O6:Eu(2+) phosphor for w-LEDs: synthesis, structure, and luminescence properties.

作者信息

Li Yang, Liu Wenjing, Wang Xicheng, Zhu Ge, Wang Chuang, Wang Yuhua

机构信息

Key Laboratory for Special Function Materials and Structural Design of the Ministry of the Education Department of Material Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China.

出版信息

Dalton Trans. 2015 Aug 7;44(29):13196-203. doi: 10.1039/c5dt01409c.

DOI:10.1039/c5dt01409c

PMID:26115078

Abstract

A double substitution induced blue-emitting phosphor Ca(Mg0.8, Al0.2)(Si1.8, Al0.2)O6:Eu(2+) (CMAS:Eu(2+)) was successfully synthesized by a solid-state reaction process, and its structure and luminescence properties were investigated in detail. The crystal structure and chemical composition of the CMAS matrix were analyzed and determined based on Rietveld refinements and Energy Dispersive Spectroscopy (EDS). The composition-optimized CMAS:Eu(2+) exhibited a strong blue light, centered at 446 nm upon excitation at 365 nm with the Commission Internationale de L'Eclairage (CIE) coordinates of (0.144, 0.113). Under 380 nm excitation, the PL emission intensity area of the optimized phosphor was found to be 46.95% of that of the commercial BaMgAl10O17:Eu(2+) (BAM:Eu(2+)) phosphor and the quantum efficiency of the phosphor is 41.32%. The temperature-dependent PL studies have been investigated which show the thermal stability of the CMAS:Eu(2+) phosphor compared with that of the CaMgSi2O6:Eu(2+) (CMS:Eu(2+)) phosphor.

摘要

通过固态反应法成功合成了一种双取代诱导的蓝色发光荧光粉Ca(Mg0.8, Al0.2)(Si1.8, Al0.2)O6:Eu(2+)（CMAS:Eu(2+)），并对其结构和发光性能进行了详细研究。基于Rietveld精修和能量色散光谱（EDS）对CMAS基质的晶体结构和化学成分进行了分析和测定。成分优化后的CMAS:Eu(2+)在365nm激发下呈现出以446nm为中心的强蓝光，国际照明委员会（CIE）坐标为(0.144, 0.113)。在380nm激发下，发现优化后的荧光粉的PL发射强度面积是商用BaMgAl10O17:Eu(2+)（BAM:Eu(2+)）荧光粉的46.95%，且该荧光粉的量子效率为41.32%。研究了温度依赖的PL，结果表明CMAS:Eu(2+)荧光粉与CaMgSi2O6:Eu(2+)（CMS:Eu(2+)）荧光粉相比具有热稳定性。