ScVO<sub>4</sub>∶Eu<sup>3+</sup>红色荧光粉的制备及发光性能

doi:10.3964/j.issn.1000-0593(2020)10-3077-04

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摘要：采用高温固相法制备了ScVO₄∶Eu³⁺红色荧光粉。通过X射线粉末衍射（XRD）、扫描电子显微镜（SEM）和光致发光光谱（PL）对样品的物相、形貌及发光性能进行了表征。结果表明：所合成的ScVO₄∶Eu³⁺红色荧光粉为四方锆石型结构。激发光谱中，位于382，395和466 nm的激发峰分别归属于⁷F₀→⁵L₇，⁷F₀→⁵L₆及⁷F₀→⁵D₂跃迁。发射光谱中，位于598，622和710 nm的发射峰对应Eu³⁺的⁵D₀→⁷F₁，⁵D₀→⁷F₂及⁵D₀→⁷F₄跃迁。当Eu³⁺掺杂量为7%，1 200 ℃煅烧3 h时，ScVO₄∶Eu³⁺红色荧光粉CIE色坐标为（0.671 6，0.327 3），荧光寿命为0.521 ms，是一种有望用于白光LED的高效红色荧光粉。

关键词：白光LED；ScVO₄∶Eu³⁺；荧光粉；光学性能

Abstract：ScVO₄∶Eu³⁺ red phosphor was prepared using-high temperature solid-state method. The phase, morphology and luminescence properties of the samples were characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM) and photoluminescence spectrum (PL). The results showed that: the synthesized ScVO₄∶Eu³⁺ red phosphor was a tetragonal system with near-spherical surface. In the excitation spectrum, the excitation peaks at 382 nm, 395 and 466 nm were attributed to ⁷F₀→⁵L₇, ⁷F₀→⁵L₆ and ⁷F₀→⁵D₂ transitions, respectively. In the emission spectrum, the emission peaks at 598, 622 and 710 nm correspond to ⁵D₀→⁷F₁, ⁵D₀→⁷F₂ and ⁵D₀→⁷F₄ transitions of Eu³⁺. When Eu³⁺ has a doping ratio of 7% and is calcined at 1 200 ℃ for 3 h, ScVO₄∶Eu³⁺ red phosphor has a CIE color coordinate of (0.671 6, 0.327 3) and fluorescence lifetime of 0.521 ms, which is a kind of high-efficiency red phosphor expected to be used in white LED.

Key words：White LEDs; ScVO₄∶Eu³⁺; Phosphor; Optical performance

收稿日期: 2019-10-26 修订日期: 2020-02-21

中图分类号:

TB333

基金资助: 国家自然科学基金项目（51474170，21205092）资助

作者简介: 李兆，1986年生，西安航空学院材料工程学院副教授 e-mail：pylizhao@163.com

引用本文:

李兆，王永锋，曹静，吴坤尧，王亚楠. ScVO₄∶Eu³⁺红色荧光粉的制备及发光性能[J]. 光谱学与光谱分析, 2020, 40(10): 3077-3080.
LI Zhao, WANG Yong-feng, CAO Jing, WU Kun-yao, WANG Ya-nan. Preparation and Performance of Red Phosphor ScVO₄∶Eu³⁺ for White LEDs. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(10): 3077-3080.

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