Synthesis and Spectroscopic Properties of Sm3+-Activated Li6Y(BO3)3 Phosphor for Light-Emitting Diode Applications

IF 2.9 3区 材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS
Coatings Pub Date : 2024-09-05 DOI:10.3390/coatings14091142
Jin Zhao, Yongchun Zhang, Jingwen Lu, Yiming Li, Yong Pan
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引用次数: 0

Abstract

A series of orange-red emitting Li6Y(BO3)3: Sm3+ (LYBO: Sm3+) phosphors were produced via the high temperature solid-state method. The structure, morphology, element distribution and photoluminescent behavior of these phosphors were thoroughly examined. XRD analysis confirmed that all samples exhibited a pure phase. Under 404 nm excitation, the emission spectra included four distinct transitions of Sm3+, attributed to 4G5/2→6H5/2 (565 nm), 4G5/2→6H7/2 (613 nm), 4G5/2→6H9/2 (647 nm) and 4G5/2→6H11/2 (708 nm). The ideal doping level for LYBO: xSm3+ is x = 0.05, and the concentration quenching primarily stems from electric dipole–dipole interactions among the ions. As the amount of Sm3+ dopant was increased, the fluorescence lifetime decreased. The CIE indicates that LYBO: 0.05Sm3+ is located in the orange-red region, exhibiting a high color purity (99%) and low color temperature (1711 K). The phosphor demonstrated excellent thermal stability and its activation energy was 0.3238 eV. In summary, LYBO: Sm3+ is a potential orange-red phosphor that can be coated onto near-ultraviolet chips suitable for W-LEDs.
用于发光二极管应用的 Sm3+ 激活型 Li6Y(BO3)3 磷酸盐的合成与光谱特性
通过高温固态法制备了一系列橙红色发光的 Li6Y(BO3)3: Sm3+ (LYBO: Sm3+)荧光粉。对这些荧光粉的结构、形态、元素分布和光致发光行为进行了深入研究。XRD 分析证实,所有样品都呈现出纯相。在 404 nm 激发下,发射光谱包括 Sm3+ 的四个不同跃迁,分别为 4G5/2→6H5/2 (565 nm)、4G5/2→6H7/2 (613 nm)、4G5/2→6H9/2 (647 nm) 和 4G5/2→6H11/2 (708 nm)。LYBO: xSm3+ 的理想掺杂水平为 x = 0.05,浓度淬灭主要源于离子间的电偶极子-偶极子相互作用。随着 Sm3+ 掺杂量的增加,荧光寿命缩短。CIE 显示,LYBO: 0.05Sm3+ 位于橙红区域,具有高色纯度(99%)和低色温(1711 K)的特点。该荧光粉具有出色的热稳定性,其活化能为 0.3238 eV。总之,LYBO: Sm3+ 是一种潜在的橙红色荧光粉,可以涂覆到适合 W-LED 的近紫外芯片上。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Coatings
Coatings Materials Science-Surfaces, Coatings and Films
CiteScore
5.00
自引率
11.80%
发文量
1657
审稿时长
1.4 months
期刊介绍: Coatings is an international, peer-reviewed open access journal of coatings and surface engineering. It publishes reviews, research articles, communications and technical notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. Full experimental and/or methodical details must be provided. There are, in addition, unique features of this journal: * manuscripts regarding research proposals and research ideas will be particularly welcomed * electronic files or software regarding the full details of the calculation and experimental procedure - if unable to be published in a normal way - can be deposited as supplementary material
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