Unique strategy for achieving excellent luminous efficiency and high saturation threshold for high-power Laser–Driven lighting

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-12-19 DOI:10.1016/j.jlumin.2024.121040

Zhanhao Fan , Mingwei Fu , Peng Qiao , Youjie Hua , Feifei Huang , Renguang Ye , Shiqing Xu , Hongping Ma

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引用次数: 0

Abstract

Laser-driven lighting offers high brightness and excellent directivity and is widely employed in laser projection and automobile headlights. However, the phosphor conversion materials currently used in laser-driven lighting suffer from low light-extraction efficiency and poor thermal conductivity. Herein, a unique phosphor-in-glass(PiG)–silver (Ag)–copper (Cu) (referred to as PAC) converter that comprises a four-layer structure is reported: high-doped phosphor-in-glass (PiG) layer, high-reflectivity silver film, sealing silver paste, and copper substrate. Due to its unique design, the sample with an 85 wt% doping concentration and a 0.2 mm thickness exhibits outstanding luminescent performance, achieving a LE of 298 lm W−1 and a luminous flux (LF) of 2873 lm at an input power of 11.54 W. Furthermore, in the rotational mode, a high LF of 3920 lm is achieved. These results demonstrate that the PAC converter holds promise for applications in high-power laser 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.