紫外激发蓝色荧光粉Sr2-x-yB5O9Cl:xEu2+, yTb3+的合成和发光性能

材料研究学报

2012, Vol. 26

Issue (1): 96-100

研究论文

本期目录 | 过刊浏览

紫外激发蓝色荧光粉Sr_2-x-yB₅O₉Cl:xEu^2+, yTb³⁺的合成和发光性能

豆喜华, 赵韦人, 宋恩海, 周国雄, 易春雨, 周民康

广东工业大学物理与光电工程学院广州 510006

Synthesis of Blue Phosphor Sr_2-x-yB₅O₉Cl:xEu^2+, yTb³⁺ and Luminescence Properties Under Ultraviolet Excitation

DOU Xihua, ZHAO Weiren, SONG Enhai, ZHOU Guoxiong, YI Chunyu, ZHOU Minkang

School of Physics & Optoelectronic Engineering, Guangdong University of Technology, Guangdong 510006

引用本文:

豆喜华赵韦人宋恩海周国雄易春雨周民康. 紫外激发蓝色荧光粉Sr_2-x-yB₅O₉Cl:xEu^2+, yTb³⁺的合成和发光性能[J]. 材料研究学报, 2012, 26(1): 96-100.
, , , , , . Synthesis of Blue Phosphor Sr_2-x-yB₅O₉Cl:xEu^2+, yTb³⁺ and Luminescence Properties Under Ultraviolet Excitation[J]. Chin J Mater Res, 2012, 26(1): 96-100.

全文: PDF(1126 KB)

摘要: 采用高温固相反应法合成Sr_2-x-yB₅O₉Cl:xEu²⁺, yTb³⁺蓝色荧光粉。用X射线衍射表征材料的晶体结构、用荧光光谱仪测定Eu²⁺和Tb³⁺的掺杂浓度, 研究了助溶剂 H₃BO₃过量浓度和反应温度对荧光粉发光性质的影响。结果表明, 单掺杂Eu²⁺时, 其浓度猝灭机理为电偶极-电偶极交互作用机制, 浓度猝灭临界距离为R_C=1.71 nm。在紫外(230--410 nm)波段有强而宽的吸收带, 表明此粉是一种近紫外白光LED 用的蓝色荧光粉。

关键词 ：无机非金属材料, 白光LED, 荧光粉, 紫外激发

Abstract：Sr_2-x-yB₅O₉Cl:xEu^2+, yTb³⁺ blue phosphors were synthesized by solid-state reaction method. The crystal structure was analyzed, and the factors affected the PL intensity of Sr₂B₅O₉Cl phosphors were investigated. The optimal conditions to obtain the blue emitting phosphor are 8% (molar fraction) Eu²⁺ concentration, 8% Tb3+ concentration, 30% excess of flux H₃BO₃ and 900℃ reaction temperature; For single-doped Eu²⁺, the concentration quenching mechanism is electric dipole-electric dipole interaction mechanism and the concentration quenching critical distance is about R_C=1.71 nm; Furthermost, there is a strong absorption in the region of 230–410 nm.

Key words： inorganic non-metallic materials white LED phosphor ultraviolet excitation

收稿日期: 2011-07-04

ZTFLH:

O482

基金资助:

广东省教育部产学研结合基金2010B090400021资助项目。

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