掺杂 Pb2+ 的 K2Al2B2O7 的合成与光致发光特性

IF 0.8 4区 化学 Q4 SPECTROSCOPY Journal of Applied Spectroscopy Pub Date : 2024-07-06 DOI:10.1007/s10812-024-01766-0
İlhan Pekgözlü
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引用次数: 0

摘要

在 850°C 的高温空气中合成了 K2-xPbxAl2B2O7 (0.0025 ≤ x ≤ 0.03) 紫外线发光荧光粉。粉末 X 射线衍射技术用于分析所有制备的硼酸盐的相。傅立叶变换红外技术用于检测 K2Al2B2O7 的键结构。在室温下,使用分光荧光仪检测制备的荧光粉的光致发光特性。结果发现,K2Al2B2O7:Pb2+ 的发射带和激发带分别位于 373 纳米和 271 纳米。对 K2-xPbxAl2B2O7 的发射强度与 Pb2+ 含量之间的相关性进行了广泛的研究。结果发现,0.01 摩尔 Pb2+ 是 K2Al2B2O7 中的最佳浓度。最终发现,制备的材料 K2Al2B2O7:Pb2+ 的斯托克斯位移为 10,090 cm-1,激发波段为 271 nm,发射波段为 373 nm。这项研究的结果是建立了一种全新的 UVA 辐射发射材料。
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Synthesis and Photoluminescence Properties of Pb2+-Doped K2Al2B2O7

Ultraviolet-emitting phosphors with the formula K2–xPbxAl2B2O7 (0.0025 ≤ x ≤ 0.03) were synthesized at 850°C for 6 h in air. The powder X-ray diffraction technique was used to analyze the phases of all prepared borates. The FTIR technique was used to examine the bond structure of K2Al2B2O7. At room temperature, a spectrofluorometer was used to examine the photoluminescence characteristics of the prepared phosphors. K2Al2B2O7:Pb2+ was found to have emission and excitation bands at 373 and 271 nm, respectively. An extensive investigation was conducted on the correlation between emission intensity and Pb2+ content for K2–xPbxAl2B2O7. Consequently, 0.01 mol Pb2+ was found to be the optimal concentration in K2Al2B2O7. Eventually, it was found that the Stokes shift of the prepared material K2Al2B2O7:Pb2+ is 10,090 cm−1 using the excitation band at 271 nm and the emission band at 373 nm. As a result of this investigation, a brand-new UVA radiation-emitting material has been established.

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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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