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Research Article | Open Access

Deep-red emitting Mg2TiO4:Mn4+ phosphor ceramics for plant lighting

Zixin WANGaHui LINa( )Dawei ZHANGaYiming SHENaYang LIaRuijin HONGaChunxian TAOaZhaoxia HANaLei CHENbShengming ZHOUc
Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, No. 516 Jungong Road, Shanghai 200093, China
Department of Pathology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200093, China
Laboratory of Micro-Nano Optoelectronic Materials and Devices, Key Laboratory of Materials for High-Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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Abstract

In this study, deep-red emitting Mg2TiO4:Mn4+ phosphor ceramics were synthesized by the high temperature solid-state reaction method. The ceramics can be excited by the 465 nm blue light and had a narrow emission with a full width at half maximum (FWMH) value of 31 nm. The peak wavelength was located at 658 nm, which matched the demanded wavelength for photosynthesis. The crystal field strength (Dq) and the Racah parameters (B and C) were estimated by the Tanabe-Sugano diagram. The thermal conductivity of the Mg2Ti(0.999)O4:0.001Mn4+ ceramic was 7.535 W/(m·K) at room temperature, which was one order of magnitude higher than that of the traditional packaging method using the silicone gel. A set of phosphor converted LEDs were fabricated by mounting the phosphor ceramics onto the 460 nm blue LED chips and the CIE coordinates can move from the blue region to the purple light region with the thickness of the ceramic increasing. These results indicated that the Mg2TiO4:Mn4+ phosphor ceramic was suitable for plant lighting when combined with a blue LED chip.

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Journal of Advanced Ceramics
Pages 88-97
Cite this article:
WANG Z, LIN H, ZHANG D, et al. Deep-red emitting Mg2TiO4:Mn4+ phosphor ceramics for plant lighting. Journal of Advanced Ceramics, 2021, 10(1): 88-97. https://doi.org/10.1007/s40145-020-0421-6

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Received: 25 May 2020
Revised: 19 August 2020
Accepted: 04 September 2020
Published: 09 November 2020
© The Author(s) 2020

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