高色纯度白光LED用蓝光材料Gd2MgTiO6：Bi3+的合成及性能

汲长艳; 肖双燕; 黄中胜; 黄志; 文瑾; 彭秧锡

doi:10.3788/fgxb20204105.0529

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高色纯度白光LED用蓝光材料Gd₂MgTiO₆：Bi³⁺的合成及性能

材料合成及性能 | 更新时间：2020-09-21

- 高色纯度白光LED用蓝光材料Gd₂MgTiO₆：Bi³⁺的合成及性能
- High Color Purity Blue Emitting Phosphors Gd₂MgTiO₆:Bi³⁺ for White Light Emitting Diodes:Synthesis and Luminescence Properties
- 发光学报 2020年41卷第5期页码：529-535
- 作者机构：
  
  1.湖南人文科技学院材料与环境工程学院, 精细陶瓷与粉体材料湖南省重点实验室, 湖南娄底 417000
  2.国家电子陶瓷产品质量监督检验中心(湖南), 湖南娄底 417000
- 作者简介：
  
  [ "汲长艳(1985-)，女，山东临沂人，博士，讲师，2016年于大连理工大学获得博士学位，主要从事光电材料的研究" ]
  [ "黄志 (1988-)，男，江西九江人，硕士，工程师，2013年于沈阳化工大学获得硕士学位，主要从事无机材料研发和检验检测" ]
- 基金信息：
  
  湖南省教育厅优秀青年基金(18B450);精细陶瓷与粉体材料湖南省重点实验室开放基金(TC201704);湖南省自然科学基金(019JJ50282);湖南省科技计划(2016TP1028);湖南省"双一流"应用特色学科(湘教通[2018]469号)
- DOI：10.3788/fgxb20204105.0529
  中图分类号：
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汲长艳, 肖双燕, 黄中胜, 等. 高色纯度白光LED用蓝光材料Gd₂MgTiO₆：Bi³⁺的合成及性能[J]. 发光学报, 2020,41(5):529-535.

Chang-yan JI, Shuang-yan XIAO, Zhong-sheng HUANG, et al. High Color Purity Blue Emitting Phosphors Gd₂MgTiO₆:Bi³⁺ for White Light Emitting Diodes:Synthesis and Luminescence Properties[J]. Chinese Journal of Luminescence, 2020,41(5):529-535.
汲长艳, 肖双燕, 黄中胜, 等. 高色纯度白光LED用蓝光材料Gd₂MgTiO₆：Bi³⁺的合成及性能[J]. 发光学报, 2020,41(5):529-535. DOI： 10.3788/fgxb20204105.0529.

Chang-yan JI, Shuang-yan XIAO, Zhong-sheng HUANG, et al. High Color Purity Blue Emitting Phosphors Gd₂MgTiO₆:Bi³⁺ for White Light Emitting Diodes:Synthesis and Luminescence Properties[J]. Chinese Journal of Luminescence, 2020,41(5):529-535. DOI： 10.3788/fgxb20204105.0529.

摘要

采用高温固相法合成了一系列蓝光荧光粉Gd,2-,x,MgTiO,6,：,x,Bi,3+,（0.002 5≤,x,≤0.015），并对样品的表面形貌、晶体结构、发光性能和热稳定性进行了探究。SEM测试结果显示，样品Gd,2,MgTiO,6,：Bi,3+,的粒径分布范围大，颗粒尺寸在1~5 μm范围。XRD测试表明，Bi,3+,成功掺杂进入基质Gd,2,MgTiO,6,中且无杂相产生。荧光光谱测试结果表明，在375 nm波长激发下，蓝光荧光粉Gd,2,MgTiO,6,：Bi,3+,于385~500 nm波长范围内呈现出属于Bi,3+,的,1,S0→,3,P,1,能级跃迁的窄带发射峰，且发射强度最大处位于418 nm，这有利于避免光的重吸收现象。不同掺杂浓度下样品的发射光谱研究表明，最佳Bi,3+,掺杂浓度为,x,=0.007 5。此外，发光强度最佳的蓝光样品Gd,1.9925,MgTiO,6,：0.0075Bi,3+,的CIE坐标为（0.162 9，0.036 4），位于蓝光区域，色纯度高达96.42%，平均荧光寿命高达11.29 ms。样品的热稳定性高于文献报道的同类样品。这些均说明该样品是一种发光性能和热稳定性能良好的W-LEDs用蓝光组分。

Abstract

A series of blue-emitting phosphors Gd,2-,x,MgTiO,6,:,x,Bi,3+,(0.002 5 ≤ ,x, ≤ 0.015) were synthesized by high-temperature solid state method, and the corresponding morphology, crystal structure, photoluminescence properties and thermal stability were investigated. The scan electron microscope(SEM) test predicted that the samples Gd,2,MgTiO,6,:Bi,3+, possessed a large particle size distribution with the particle size ranging from 1 μm to 5 μm. The X-ray diffraction (XRD) analysis showed that the Bi,3+, ions successfully doped into host lattice Gd,2,MgTiO,6, with no other impurity phase existed. The photoluminescence properties stated that the blue emitting phosphors Gd,2,MgTiO,6,:Bi,3+, presented a single narrow emission peak located at about 418 nm assigned to the ,1,S0→,3,P,1, transition in the range from 385 nm to 500 nm in the excitation of 375 nm, which helped to avoid light reabsorption. Moreover, when the doping concentration of Bi,3+, ions is 0.007 5, the emission intensity reaches the maximum. The sample Gd,1.9925,MgTiO,6,:0.0075Bi,3+, with best photoluminescence properties exhibited a Commission Internationale De I'eclairage(CIE) coordinates of (0.162 9, 0.036 4) in blue-light area with an impressive color purity up to 96.42% and an impressive average lifetime of 11.29 ms. In addition, the thermal stability of sample Gd,1.9925,MgTiO,6,:0.0075Bi,3+, was relatively higher than that of similar blue-emitting phosphors in the literature. These results indicated that sample Gd,1.9925,MgTiO,6,:0.0075Bi,3+, is a kind of blue-emitting component for W-LEDs with excellent luminescence and thermal stability.

关键词

W-LEDs高色纯度Gd2MgTiO6:Bi蓝光荧光粉

Keywords

W-LEDshigh color purityGd2MgTiO6:Biblue emitting phosphor

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