title: Near-infrared long-persistent phosphor of Zn₃Ga ₂Ge ₂O₁₀: Cr³⁺ sintered in different atmosphere.
abstract: A variety of materials sintered in different atmosphere have been well investigated, but there are few reports on the long-persistent phosphorescent materials, especially the near-infrared long-persistent phosphorescent materials sintered in various atmosphere. Changing the surrounding atmosphere is an effective method to improve the afterglow properties of the materials. In this work, we fabricate a typical kind of near-infrared long-persistent phosphorescent materials of Zn3Ga2Ge2O10: 0.5% Cr(3+) in neutral, oxidizing, and reducing atmosphere. By analyzing the XRD patterns, afterglow spectra, decay and thermo-luminescence curves, we discuss the great effects on the structure, long persistent properties and trap properties of the phosphor. This work of obtaining the Zn3Ga2Ge2O10: 0.5% Cr(3+) is of great potential in the applications in night-vision surveillance and in vivo bio-imaging.
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors.forename: Yiling
authors.initials: Y
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China. Electronic address: msliyang@scut.edu.cn.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors.forename: Xixi
authors.initials: X
authors.lastname: Qin
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors.forename: Ruchun
authors.initials: R
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors.forename: Dakun
authors.initials: D
authors.lastname: Wu
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors.forename: Shijian
authors.initials: S
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China. Electronic address: qjr@scut.edu.cn.
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu
mesh_terms: D001272:Atmosphere; D002857:Chromium / Q000737:chemistry*; D005708:Gallium / Q000737:chemistry*; D005857:Germanium / Q000737:chemistry*; D049449:Luminescence; D008163:Luminescent Measurements; D010100:Oxygen / Q000737:chemistry*; D019265:Spectroscopy, Near-Infrared; D015032:Zinc / Q000737:chemistry*
chemical_list: D005857:Germanium; D002857:Chromium; D005708:Gallium; D015032:Zinc; D010100:Oxygen
keywords: Atmosphere; Defect; NIR long-persistent phosphorescence