Sr1-yEuySi2O2-zN2+2z/3的 发光性质及其在白光LED上的应用

张 梅; 丁唯嘉; 王 静; 苏 锵

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Sr_1-yEu_ySi₂O_2-zN_2+2z/3的发光性质及其在白光LED上的应用

论文 | 更新时间：2020-08-12

- Sr_1-yEu_ySi₂O_2-zN_2+2z/3的发光性质及其在白光LED上的应用
- Optical Properties of Sr_1-yEu_ySi₂O_2-zN_2+2z/3 Phosphors and Their Applications in White LED
- 发光学报 2010年31卷第1期页码：31-38
- 作者机构：
  
  1. 五邑大学功能材料研究所
  2. 中山大学化学与化学工程学院
  3. 华南农业大学理学院
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： O482.31
- 收稿：2009-04-01，
  
  修回：1900-1-2，
  
  网络首发：2010-02-20，
  
  纸质出版：2010-02-20
- 稿件说明：
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张梅, 丁唯嘉, 王静, 等. Sr_1-yEu_ySi₂O_2-zN_2+2z/3的发光性质及其在白光LED上的应用[J]. 发光学报, 2010,31(1):31-38.

ZHANG Mei, DING Wei-jia, WANG Jing, et al. Optical Properties of Sr_1-yEu_ySi₂O_2-zN_2+2z/3 Phosphors and Their Applications in White LED[J]. Chinese Journal of Luminescence, 2010, 31(1): 31-38.
张梅, 丁唯嘉, 王静, 等. Sr_1-yEu_ySi₂O_2-zN_2+2z/3的发光性质及其在白光LED上的应用[J]. 发光学报, 2010,31(1):31-38. DOI：

ZHANG Mei, DING Wei-jia, WANG Jing, et al. Optical Properties of Sr_1-yEu_ySi₂O_2-zN_2+2z/3 Phosphors and Their Applications in White LED[J]. Chinese Journal of Luminescence, 2010, 31(1): 31-38. DOI：

摘要

采用高温固相法合成出系列黄绿色Sr

1-y

2-z

2+2z/3

荧光材料

进行了光学性质表征并探索了其在LED上的应用。在Eu

掺杂浓度为0~0.200范围内

所合成的化合物为系列色坐标可调的黄绿光-黄光连续固溶体

在250~500 nm具有高的激发效率

激发和发射光谱位置及其发射强度随Eu

浓度改变产生规律性变化;利用光谱理论系统研究了Eu

的最低5d吸收能级、5d轨道重心移动、晶体场分裂和Stokes位移对激发和发射光谱位置、半峰全宽和荧光寿命的影响及其相互关系。该类荧光材料在77~425 K具有良好的温度特性

425 K时的发射强度为77 K的58%左右。首次将它们和近紫外LED(~400 nm)、蓝光LED(~460 nm)封装成高亮度黄绿光和黄光LED以及白光LED

发光效率高达19 lm/W

这些封装的LED的发光性能也随着Eu

浓度

以及粉胶比例变化而呈规律性变化。

Abstract

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references

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