Photoluminescence Properties of Novel BaLiZn3(BO3)3:RE (RE = Sm3+, Tb3+, Dy3+, and Pb2+) Blue, Green, Orange-Red Emitting Phosphors for White Light Emitting Diodes

IF 0.8 4区 化学 Q4 SPECTROSCOPY Journal of Applied Spectroscopy Pub Date : 2024-09-14 DOI:10.1007/s10812-024-01793-x
E. Yildiz, E. Erdoğmuş, G. Annadurai
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Abstract

A new class of BaLiZn3(BO3)3:RE (RE = Sm3+, Tb3+, Dy3+, and Pb2+) phosphors were synthesized with a solid- state reaction method. The minor concentrations of various rare earth (Tb3+, Dy3+, and Sm3+) ions and transition metal (Pb2+) ions activated in the BaLiZn3(BO3) host matrix were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence spectroscopy. The XRD results of BaLiZn3(BO3)3:RE (RE = Sm3+, Tb3+, Dy3+, and Pb2+) phosphors confirmed that all the samples have a monoclinic phase. SEM studies revealed that the morphology of BaLiZn3(BO3)3:RE (RE = Sm3+, Tb3+, Dy3+, and Pb2+) phosphors was irregular. The photoluminescence emission and excitation spectra show that these phosphors can be effectively excited by near-ultraviolet light-emitting diodes (n-UV), and they all exhibit an efficient orange-red (Sm3+, 4G5/26H7/2), green (Tb3+, 5D47F5), yellow (Dy3+, 4F9/26H13/2), and blue (Pb2+, 3P11S0) emission. All of the above results confirmed that the obtained phosphors could be a potential candidate for n-UV-excited WLEDs.

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用于白光发光二极管的新型 BaLiZn3(BO3)3:RE(RE = Sm3+、Tb3+、Dy3+ 和 Pb2+)蓝、绿、橙红发光荧光粉的光致发光特性
采用固态反应方法合成了一类新型 BaLiZn3(BO3)3:RE(RE = Sm3+、Tb3+、Dy3+ 和 Pb2+)荧光粉。利用 X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和光致发光光谱对 BaLiZn3(BO3) 主基质中活化的各种稀土(Tb3+、Dy3+ 和 Sm3+)离子和过渡金属(Pb2+)离子的微量浓度进行了表征。BaLiZn3(BO3)3:RE(RE = Sm3+、Tb3+、Dy3+ 和 Pb2+)荧光粉的 XRD 结果证实,所有样品都具有单斜相。扫描电镜研究表明,BaLiZn3(BO3)3:RE(RE = Sm3+、Tb3+、Dy3+ 和 Pb2+)荧光粉的形态不规则。光致发光发射光谱和激发光谱显示,这些荧光粉可以被近紫外发光二极管(n-UV)有效激发,并且都呈现出高效的橙红色(Sm3+,4G5/2 → 6H7/2)、绿色(Tb3+,5D4 → 7F5)、黄色(Dy3+,4F9/2 → 6H13/2)和蓝色(Pb2+,3P1 → 1S0)发射。所有上述结果都证实,所获得的荧光粉有可能成为正紫外激发 WLED 的候选材料。
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来源期刊
CiteScore
1.30
自引率
14.30%
发文量
145
审稿时长
2.5 months
期刊介绍: Journal of Applied Spectroscopy reports on many key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers focus on the theory of lasers, as well as the tremendous potential for the practical applications of lasers in numerous fields and industries.
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