Novel Far-red Phosphors (La,Gd,Y)2MgTiO6∶Cr3+ with Tunable Luminescence Spectra for Grow Light

Pei-xin GAO; Peng DONG; Ze-yun ZHOU; Xiao-juan ZHANG; Ya-nan LI; Jian-kui YANG; Qian LI; Ke CHEN; Maxim S MOLOKEEV; Zhi ZHOU; Ma XIA

doi:10.37188/CJL.20210327

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Novel Far-red Phosphors (La,Gd,Y)₂MgTiO₆∶Cr³⁺ with Tunable Luminescence Spectra for Grow Light

Synthesis and Properties of Materials | 更新时间：2022-01-14

- Novel Far-red Phosphors (La,Gd,Y)₂MgTiO₆∶Cr³⁺ with Tunable Luminescence Spectra for Grow Light
  增强出版
- Chinese Journal of Luminescence Vol. 43, Issue 1, Pages: 58-68(2022)
- 作者机构：
  
  1.湖南省作物种质创新与资源利用重点实验室，湖南　长沙　410128
  2.湖南农业大学　化学与材料科学学院，湖南　长沙　410128
  3.湖南农业大学　湖南省光学农业工程技术研究中心，湖南　长沙　410128
  4.俄罗斯联邦研究中心　克伦斯基物理研究所晶体物理实验室，克拉斯诺亚尔斯克　660036
  5.西伯利亚联邦大学，克拉斯诺亚尔斯克　660041
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51974123);The Distinguished Youth Foundation of Hunan Province(2020JJ2018);Key R & D Projects in Hunan Province(2020WK2016;2020SK2032;2022NK2044);Hunan High Level Talent Gathering Project(2019RS1077;2020RC5007);Natural Science Foundation of Hunan Province(2021JJ40261);The Scientific Research Fund of Hunan Provincial Education Department(19C0903);The Natural Sciences Foundation of Hunan Agricultural University(19QN11);Hunan Provincial Key Laboratory of Crop Germplasm Innovation and Resource Utilization Science Foundation(19KFXM12);Changsha Science and technology plan(KH2005114)
- DOI：10.37188/CJL.20210327
  CLC：
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Pei-xin GAO, Peng DONG, Ze-yun ZHOU, et al. Novel Far-red Phosphors (La,Gd,Y)₂MgTiO₆∶Cr³⁺ with Tunable Luminescence Spectra for Grow Light. [J]. Chinese Journal of Luminescence 43(1):58-68(2022)
DOI：

Pei-xin GAO, Peng DONG, Ze-yun ZHOU, et al. Novel Far-red Phosphors (La,Gd,Y)₂MgTiO₆∶Cr³⁺ with Tunable Luminescence Spectra for Grow Light. [J]. Chinese Journal of Luminescence 43(1):58-68(2022) DOI： 10.37188/CJL.20210327.

摘要

Cr,3+,激活荧光粉因其具有远红光和近红外光发射的特性而受到广泛关注。本研究合成了一系列(La,Gd, Y),2,MgTiO,6,∶Cr,3+,荧光粉，在345 nm紫外光激发下，其发射波段为700~900 nm。采用离子取代策略对其光谱进行了调谐，通过Gd或Y取代La位点，发射主峰从766 nm分别蓝移至737 nm和757 nm;150 ℃下的热稳定性从41.7%分别提升至69.1%和67%。系统研究了荧光粉的晶体结构、微观形貌、荧光寿命、热稳定性能和带隙变化等。Gd和Y离子取代会导致晶格收缩，引起电子云重排效应变化，最终导致发射光谱蓝移。改性后荧光粉的发射光谱与光敏色素FR(,P,FR,)的吸收(730 nm)具有更好的匹配性，表明其在植物生长照明中的应用前景，这也证明通过阳离子取代策略调控Cr,3+,的发光性能可为未来植物生长灯用荧光粉的研发提供思路。

Abstract

Cr,3+,-activated double perovskite structure phosphor has drawn wide attention due to its far-red and near-infrared emission. In this work, we synthesized a series of (La,Gd,Y),2,MgTiO,6,∶Cr,3+, phosphors which can be excited by ultraviolet light of about 345 nm, and the emission bands are in the range of 700-900 nm. The spectra were tuned by ions substitution strategy. The main emission peaks were blue shifted from 766 nm to 737 nm and 757 nm by substituting the La site with Gd and Y, respectively. Meanwhile, the thermal stability at 150 ℃ increased from 41.7% to 69.1% and 67%, respectively. The crystal structure, microstructure, decay time, thermal stability and band gap were investigated systematically. The substitution of Gd/Y ions causes the lattice contraction, which results in the change of the nephelauxetic effect, and eventually leads to the blue shift of the spectra. The emission spectra of these phosphors have good matching with the 730 nm absorption peak of phytochrome FR(,P,FR,), indicating their application prospect in plant growth lighting. Cationic substitution strategy can regulate the luminescence properties of Cr,3+, which provides ideas for the development of phosphors for plant growth lamps in the future.

关键词

荧光粉双钙钛矿结构光谱可调性能远红光Cr3+

Keywords

phosphordouble perovskite structureluminescence tuning performancefar-red lightCr3+

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