Preparation,optical properties and energy transfer of SrLaAlO4∶Dy3+,Eu3+

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外文摘要：A series of Dy3+/Eu3+single doped and co-doped SrLaAlO4 phosphors was synthesized by the traditional high-temperature solid-state method,and their structure,morphology and optical properties were characterized.The X-ray diffraction(XRD)shows a small amount of doping with Dy3+and Eu3+does not change the crystal structure of the matrix SrLaAlO4 and the best synthesis temperature is 1450 ℃.The scanning electron microscopy(SEM)indicates the particle size directly ranges from 1 to 5 μm roughly and the energy dispersive spectroscopy(EDS)patterns show that SrLaAlO4∶Dy3+phosphor and SrLaAlO4∶Dy3+,Eu3+phosphor were successfully synthesized.SrLaAlO4∶Dy3+phosphor can be effectively excited by near-ultraviolet light,producing two strong emission lights at 483 nm(blue light)and 579 nm(yellow light),presenting a cold white light;SrLaAlO4∶Eu3+phosphor can be effectively excited by near-ultraviolet light,producing red lights at 622 nm;the characteristic emission peaks of Dy3+and Eu3+can be shown simultaneously under the same excitation wavelength in SrLaAlO4∶Dy3+,Eu3+phosphor.By changing the relative doping concentration ratio of Dy3+and Eu3+,the modulation of SrLaAlO4∶Dy3+,Eu3+phosphor from cold white to warm white light can be achieved.In addition,the study of the luminescent mechanism and lifetime shows that there is energy transfer between Dy3+and Eu3+in SrLaAlO4∶Dy3+,Eu3+phosphor.

外文关键词：

High-temperature solid-phase methodSrLaAlO4∶Dy3+,Eu3+Luminescence propertiesWhite phosphorEnergy transferRare earths

作者：

Wei Chen、Heng Zhang、Desheng Zhu

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作者单位：

School of Physic and Optoelectronic Engineering,Yangtze University,Jingzhou,434023,China

基金：

Outstanding Young and Middleaged Scientific Innovation Team of Colleges and Universities of Hubei Province

项目编号：

T2020008

出版年：

2024

DOI：

10.1016/j.jre.2023.11.001

稀土学报(英文版)

中国稀土学会

稀土学报(英文版)

CSTPCDEI

影响因子：1.3

ISSN：1002-0721

年,卷(期)：2024.42(11)