(Sr, Ca)AlSiN3:Eu2+ Phosphor-Doped YAG:Ce3+ Transparent Ceramics as Novel Green-Light-Emitting Materials for White LEDs

被引：3

作者：

Yao, Qing ^{[1
,2
,3
]}

Pan, Xinyi ^{[1
]}

Tian, Junjie ^{[1
]}

Chen, Zhihang ^{[1
]}

Ji, Hongbin ^{[2
]}

Wang, Yun ^{[3
]}

机构：

[1] Nantong Univ, Sch Mech Engn, Nantong 226019, Peoples R China

[2] Nantong Cotton Machinery, Nantong 226300, Peoples R China

[3] Jiangsu Univ, Sch Mech Engn, Zhenjiang 212013, Peoples R China

来源：

MATERIALS | 2023年 / 16卷 / 02期

关键词：

YAG; Ce3+ phosphor transparent ceramics; (Sr; Ca)AlSiN3; Eu2+ phosphors; green-light ceramic; spectral regulation; white-light-emitting diode; Y3AL5O12CE3+ SINGLE-CRYSTAL; COLOR-RENDERING INDEX; LUMINESCENCE; GLASS; CE; FABRICATION; CONVERTERS; GD3+; PIG;

D O I：

10.3390/ma16020730

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, based on Y3Al5O12:Ce3+ (YAG:Ce3+) transparent ceramic and (Sr, Ca)AlSiN3:Eu2+ phosphors, novel green-light-emitting materials were systematically studied. YAG:Ce3+ transparent ceramics with different doping-concentrations, from 0% to 1% (Sr, Ca)AlSiN3:Eu2+ phosphors, were fabricated by dry pressing and vacuum sintering. The serial phosphor ceramics had 533 nm green-light emission when excited by 460 nm blue light. The PL, PLE, and chromaticity performances were measured, indicating that more of the green-light component was emitted with the increase in doping concentration. The addition of (Sr, Ca)AlSiN3:Eu2+ phosphor increased the green-light wavelength area and improved the quantum yield (QY) of the YAG:Ce3+ ceramic matrix. The phase composition, microstructure, crystal-field structure and phosphor distribution of (Sr, Ca)AlSiN3:Eu2+ phosphor-doped YAG:Ce3+ transparent ceramics were investigated, to explore the microscopic causes of the spectral changes. Impressively, (Sr, Ca)AlSiN3:Eu2+ phosphors were distributed homogeneously, and the pinning effect of phosphor caused the suppression of grain growth. The novel materials could provide an effective strategy for full-spectrum white lighting and displaying applications in the future.

引用

页数：12

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