一种具有植物照明应用潜力的Ca_(2)Gd_((1-x))Ga_(3)Ge_(2)O_(12):xEu^(3+)石榴石基荧光粉  

Synthesis of Ca_(2)Gd_((1-x))Ga_(3)Ge_(2)O_(12):xEu^(3+)Garnet-based Phosphor with Potential Application in Plant Growth Lighting

作　　者：宋宏基 倪海勇 高丽霞[2] 特罗菲莫夫·尤里·瓦西里耶维奇 张秋红 李森[2] 丁建红 李许波 SONG Hong-ji;NI Hai-yong;GAO Li-xia;TELUOFEIMOFU·Youli·waxiliyeweiqi;ZHANG Qiu-hong;LI Sen;DING Jian-hong;LI Xu-bo(Laboratory of Rare Earth Luminescent Materials and Devices,Institute of Resources Utilization and Rare Earth Development,Guangdong Academy of Sciences,Guangzhou,Guangdong,510650,China;Teaching and Scientific Research Farm,Zhongkai University of Agriculture and Engineering,Guangzhou,Guangdong,510550,China;Center for LED and Optoelectronic Technologies,Belarusian National Academy of Sciences of Belarus,Minsk,220072,Belarus)

机构地区：[1]广东省科学院资源利用与稀土开发研究所稀土发光材料与器件研究室,广东广州510650 [2]仲恺农业工程学院教学科研农场,广东广州510550 [3]白俄罗斯国家科学院LED与光电技术中心,白俄罗斯明斯克220072

出　　处：《新疆师范大学学报(自然科学版)》2025年第3期42-50,共9页Journal of Xinjiang Normal University(Natural Sciences Edition)

摘　　要：本研究采用Eu^(3+)取代Gd3+合成了一系列的Ca_(2)Gd_((1-x))Ga_(3)Ge_(2)O_(12):xEu^(3+)(CGGG:Eu^(3+))石榴石基荧光粉。通过X射线粉末衍射研究样品的晶体结构,通过荧光激发光谱、发射光谱、变温发射光谱和荧光量子产率测试样品的发光性能。结果表明:在394 nm的紫外光激发下,其发射光包括从橙光、红光到深红光的Eu^(3+)特征光谱,分别来源于电子跃迁5D0-7FJ(J=1,2,3,4),通过这三种光的混合可以提供适宜植物生长所需的波长范围内的光。样品的变温发射光谱表明,样品在高温下具有良好的热稳定性,且计算得到热激活能为0.229 eV.样品的量子效率为85.8%,这表明该荧光粉可以高效地将紫外光转化为植物主要吸收的光,显著提升能量的利用效率,为植物生长照明领域提供新的材料。未来的研究可以围绕如何利用荧光粉在不同植物生长阶段提供定制化的光照方案,从而提高光能的利用效率,促进植物生长。In this study,Eu^(3+)replaced Gd3+in a series of Ca_(2)Gd_((1-x))Ga_(3)Ge_(2)O_(12):xEu^(3+)(CGGG:Eu^(3+))garnet-based phosphors.The crystal structure of the samples were investigated by X-ray powder diffraction.The luminescence properties of the samples were studied using fluorescence excitation spectroscopy,emission spectra,temperaturedependent emission spectra and fluorescence quantum yield tests.The results show that under UV excitation at 394 nm,the emission light contains the characteristic spectrum of Eu^(3+)ranging from orange to red and to deep red,originating from the 5D0-7FJ(J=1,2,3,4)electron transitions.The combination of these three types of light ensures that the wavelength range required for optimal plant growth.The temperature-dependent emission spectra of the samples shows great thermal stability at high temperatures,and the thermal activation energy was calculated to be 0.229 eV.Meanwhile,the quantum efficiency of the representative sample was 85.8%,which means that the luminescent material can efficiently transfer UV light into the light that is mainly absorbed by plants,significantly improving the efficiency of energy use.This discovery opens up new material options in the field of plant growth lighting and provides a basis for further research into the response of plants to different spectra.Future research could explore how these phosphors can be used to provide tailored lighting solutions at different stages of plant growth,thereby improving the efficiency of light energy use and facilitating plant growth.

关 键 词：荧光粉 石榴石结构 紫外光转换 深红光 植物照明 

分 类 号：O482.31[理学—固体物理]