燃烧制备的用于先进固态照明和潜在指纹识别的Dy3+活化Ca8ZnBi(VO4)7纳米样品的晶体学和光致发光特性

IF 2.1 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2025-03-01 DOI:10.1016/j.ssc.2025.115891

Neeraj Sehrawat , Poonam Devi , Hina Dalal , Diksha Solanki , Ojas Garg , Neelam Kumari , R. Punia , Sapana Garg

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引用次数: 0

摘要

采用溶液燃烧法制备了三价镝（Dy3+）离子活化的钒酸盐基纳米晶Ca8ZnBi(VO4)7荧光粉。利用Rietveld细化和x射线衍射剖面，验证了R3c（161）空间群构造序列的三角相。PL发射光谱在485和575 nm处显示两个不同的波段。485 nm处的亮蓝色发射峰是由Dy3+离子的4F9/2→6H15/2超敏跃迁引起的。利用透射电镜（TEM）和扫描电镜（SEM）对其结构特征进行了分析。利用能量色散x射线分析（EDAX）计算元素组成。纳米粉体的带隙分别为3.18 eV和3.16 eV。该材料的衰变时间为0.7470 ms，量子效率为64.80%，非辐射率为471.1 s−1。色坐标（0.3167,0.3349）和相关色温（6257 K）的比色量表明，它发出冷白光，可用于白光led等户外照明设备，使其成为潜在指纹（LFP）开发的理想选择。

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Crystallographic and photoluminescent features of Dy3+- activated Ca8ZnBi(VO4)7 nanosample produced by combustion for use in advanced solid - state lighting and latent fingerprinting applications

Synthesis of trivalent dysprosium (Dy³⁺) ions activated nanocrystalline vanadate based Ca₈ZnBi(VO₄)₇ phosphor was done using the solution combustion method. Using Rietveld refinement and x-ray diffraction profiles, the trigonal phase of the constructed series with the R3c (161) space group was verified. The PL emission spectrum reveals two different bands at 485 and 575 nm. The bright blue emission peak at 485 nm is attributed to the ⁴F_9/2 → ⁶H_15/2 hypersensitive transition of Dy³⁺ ions. Electron microscopy techniques, TEM and SEM, were exercised to analyze the structural characteristics. Energy dispersive X-ray analysis (EDAX), was utilized to compute the elemental composition. The host and optimal nanopowder had a band gap of 3.18 eV and 3.16 eV. The optimal nanomaterial has a decay time of 0.7470 ms, quantum efficiency of 64.80 %, and non-radiative rates of 471.1 s⁻¹. The colorimetric quantities with color coordinates (0.3167, 0.3349), and correlated color temperature (6257 K), indicate that it emits cool white light and can be used in outdoor lighting devices such as white LEDs and making it ideal for latent fingerprint (LFP) development.

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来源期刊

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.