光谱学与光谱分析, 2017, 37 (8): 2627, 网络出版: 2017-08-30   

一种新型Ca3Mg3Si4O14∶Eu2+绿色荧光粉的制备及其性能研究

Preparation and Luminescence Properties of a New Green Emitting Ca3Mg3Si4O14∶Eu2+ Phosphor
作者单位
中国计量大学光学与电子科技学院, 浙江 杭州 310018
摘要
采用CaCO3, MgO, SiO2, Eu2O3原料, 通过高温固相法制备了Ca3Mg3Si4O14∶Eu2+荧光粉。 通过XRD图谱和PL光谱图, 研究了Eu的掺杂浓度与助溶剂(NH4Cl, BaF2)对Ca3Mg3Si4O14∶Eu2+荧光粉结构、 发光性能和热稳定的影响。 XRD图谱对比结果表明, 制备的Ca3Mg3Si4O14∶Eu2+荧光粉XRD图与理论计算得到的图谱几乎一致。 Ca3Mg3Si4O14∶Eu2+荧光粉在360~450 nm有很强的激发强度, 并且在440 nm激发下发射峰值波长为530 nm的发射光。 随着Eu2+离子浓度的增加, 发射光谱出现了红移, 且在Eu2+离子浓度约为6%时发生了浓度猝灭现象。 当添加NH4Cl和BaF2作为助溶剂, Ca3Mg3Si4O14∶Eu2+荧光粉的发光强度有一定提高。 与未添加助溶剂的Ca3Mg3Si4O14∶Eu2+荧光粉的发光强度相比, 添加NH4Cl助溶剂后发光强度增加了70%。 此外, 当温度升高至150 ℃时, Ca3Mg3Si4O14∶Eu2+荧光粉和商用绿色荧光粉的发光强度分别降低了7.6%和14%, 表明Ca3Mg3Si4O14∶Eu2+荧光粉具有良好的热稳定性。 这些发光性能均表明Ca3Mg3Si4O14∶Eu2+荧光粉是是一种可应用于固态照明的有前景的绿色荧光粉。
Abstract
Green light-emitting Ca3Mg3Si4O14∶Eu2+ phosphors were prepared by solid-state reaction using CaCO3, MgO, SiO2 and Eu2O3 as raw materials. The effects of Eu-doping concentration and fluxes (NH4Cl, BaF2) on the crystal structure, luminescence property, and thermal stability of phosphor were studied, which were characterizes by X-ray diffraction (XRD), and photoluminescence (PL) spectra, respectively. The XRD results show that the crystal structure of Ca3Mg3Si4O14∶Eu2+ is consistent with the calculated patterns, which investigated the crystal structure of the compound Ca3Mg3Si4O14∶Eu2+. The phosphor has strong excitation around 360~450 nm and exhibits a broad emission band with a maximum at 530 nm under 440 nm excitation. With the increase of Eu2+ concentration, the phosphor shows a red-shift and the quenching concentration of Eu2+ is about 6%. With the introduction of NH4Cl and BaF2 as fluxes, the luminous intensity of Ca3Mg3Si4O14∶Eu2+ phosphor has been improved. Compared with the luminescence intensity of Ca3Mg3Si4O14∶Eu2+phosphor without flux, the photoluminescence intensity increased by 70% when adding NH4Cl as flux. Furthermore, the emission intensity reduced by only 7.6% and 14% at 150 ℃ for Ca3Mg3Si4O14∶Eu2+ phosphor and commercial green phosphor. The Ca3Mg3Si4O14∶Eu2+ phosphor also possesses high thermal stability, and these luminescnce properties indicate that Ca3Mg3Si4O14∶Eu2+ phosphor is a promising green phosphor for use in solid-state white lighting.

潘桦滟, 王乐, 李旸晖, 吴拓, 罗东. 一种新型Ca3Mg3Si4O14∶Eu2+绿色荧光粉的制备及其性能研究[J]. 光谱学与光谱分析, 2017, 37(8): 2627. PAN Hua-yan, WANG Le, LI Yang-hui, WU Tuo, LUO Dong. Preparation and Luminescence Properties of a New Green Emitting Ca3Mg3Si4O14∶Eu2+ Phosphor[J]. Spectroscopy and Spectral Analysis, 2017, 37(8): 2627.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!