A novel double-perovskite structure Mg2YVO6:Sm3+ phosphor with zero thermal quenching characteristics for w-LEDs and latent fingerprint development

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-02-21 DOI:10.1016/j.jlumin.2025.121147

Chang Zhou , Leyi Zhang , Huayu Sun , Han Yu , Likun Guan , Lei Zhang , Fei Li , Fanzhong Zeng , Xianchao Du , Dan Zhang , Yongqian Xu , Ruijin Yu

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引用次数: 0

Abstract

Novel orange-red Mg₂YVO₆:Sm³⁺ phosphors were synthesized via a high-temperature solid-phase reaction. The purity of Mg₂YVO₆:Sm³⁺, scanning electron microscope (SEM) image, element distribution, photoluminescence (PL), thermal stability, white light-emitting diode (w-LED) application, and so on were studied. Due to O²⁻→V⁵⁺ and O²⁻→Sm³⁺ charge transfer band (CTB), the phosphors show unique broadband excitation characteristics. Under excitation at 408 nm, the characteristic peaks were consistent with transitions from the ⁵G_5/2 to ⁶H_J (J = 5/2, 7/2, 9/2, and 11/2) energy levels at wavelengths of 565, 601, 647, and 714 nm, emitting bright orange-red light. The optimum concentration of doping was 5 mol%, and the quenching mechanism was attributed to interactions with neighboring ions. Mg₂YVO₆:5 mol%Sm³⁺ showcased remarkable thermal stability, retaining 100.2 % of its initial luminescence intensity even as the temperature escalated to 420 K. Combined with a 408 nm chip, the successfully encapsulated white LED exhibited good color rendering index (R_a = 85) and color temperature (CCT = 5889 K). Moreover, Mg₂YVO₆:Sm³⁺ phosphor demonstrates remarkable potential in latent fingerprint (LFP) development under ultraviolet lamp irradiation. It can assist in identifying the I-III level features in latent fingerprints and can be effectively combined with fingerprint impressions found on various everyday objects to achieve a development effect. Hence, it is evident that Mg₂YVO₆:Sm³⁺ holds significant application prospects in the fields of w-LED lighting and fingerprint recognition.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.