A deep-red emitting garnet-like Li6SrLa2Ta2O12:Mn4+ phosphor used for plant growth lighting

IF 3.3 3区物理与天体物理 Q2 OPTICS Journal of Luminescence Pub Date : 2025-02-20 DOI:10.1016/j.jlumin.2025.121142

Bingjie Han , Lei Shi , Ying Lv , Wei Li , Junping Hu , Yu Liu , Xiaoxiao Han , Yuhan Wang

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引用次数: 0

Abstract

A series of garnet-like Li₆SrLa₂Ta₂O₁₂:Mn⁴⁺ (LSLT:Mn⁴⁺) deep-red phosphors were synthesized by high-temperature solid-state reaction. The prepared LSLT:Mn⁴⁺ phosphors have a wide excitation band ranging from 300 nm to 550 nm, and emit deep-red light within the wavelength range of 600 nm–750 nm, with a peak at 685 nm. The maximum emission intensity is obtained when the doping concentration is x = 0.005, and excessive doping concentration leads to luminescence quenching due to dipole-dipole interaction. The emission intensity of LSLT:0.005Mn⁴⁺ phosphor at 423 K is 55.6 % of that at room temperature. The phosphor-converted light-emitting diode (pc-LED) for plant growth illumination, encapsulated with LSLT:0.005Mn⁴⁺ phosphor and a blue LED chip, can compensate for the light required for plant growth. These results suggest that the LSLT:0.005Mn⁴⁺ phosphor has potential applications in pc-LED for plant growth lighting.

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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.