Efficient and broadband Na4Al3Ta(PO4)6:Cr3+ phosphors for NIR pc-LED application

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-12-15 DOI:10.1016/j.jlumin.2024.121032

Lipeng Jiang , Dong Yang , Mei Yang , Liangliang Zhang , Jing Wang , Junji Zhang , Guojun Li , Hongbo Yu , Wei Si , Zhongxiang Shi , Zhihua Zhang , Yanjing Su

引用次数: 0

Abstract

Cr³⁺-activated phosphate-based near-infrared (NIR) luminescent materials offer a unique advantage in terms of preparation conditions. To achieve outstanding material properties, the selection of suitable octahedra is crucial. In this paper, a novel phosphate NIR phosphor, Na₄Al₃Ta(PO₄)₆:Cr³⁺ (NAT:Cr³⁺), is reported by searching for materials containing AlO₆ octahedral. Under the excitation of 456 nm, NAT:Cr³⁺ shows a broadband emission centered at 820 nm with an internal quantum efficiency of 59.7 %. The prepared NIR LED exhibits an output power of 50.9 mW at an input power of 272 mW (2.72 V, 100 mA), demonstrating the potential application in blue LED-based NIR spectroscopy.

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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.