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Crystal Field-Engineered Cr3+-Doped Gd3(MgxGa5-2xGex)O12 Phosphors for Near-Infrared LEDs and X-ray Imaging Applications.
Zeng, Tianlong; Liu, Ping; Zeng, Guoqiang; Yu, Xue; Liu, Haozhe; Zhu, Xuanyu; Huang, Wenlong; Wang, Guohao; Hou, Lihui; Zhu, Mengyu; Fang, Yongzheng; Wang, Ting.
Afiliación
  • Zeng T; College of Materials and Chemistry & Chemical Engineering, The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China.
  • Liu P; Department of Gynecology and Obstetrics, West China Second University Hospital of Sichuan University, Chengdu, Sichuan 610041, China.
  • Zeng G; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, Sichuan 610041, China.
  • Yu X; The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China.
  • Liu H; School of Mechanical Engineering, Institute for Advanced Materials, Chengdu University, Chengdu 610106, China.
  • Zhu X; College of Materials and Chemistry & Chemical Engineering, The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China.
  • Huang W; College of Materials and Chemistry & Chemical Engineering, The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China.
  • Wang G; College of Materials and Chemistry & Chemical Engineering, The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China.
  • Hou L; College of Materials and Chemistry & Chemical Engineering, The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China.
  • Zhu M; College of Materials and Chemistry & Chemical Engineering, The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu 610059, China.
  • Fang Y; School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China.
  • Wang T; School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China.
Inorg Chem ; 63(28): 12886-12893, 2024 Jul 15.
Article en En | MEDLINE | ID: mdl-38950326
ABSTRACT
Inorganic materials doped with chromium (Cr) ions generate remarkable and adjustable broadband near-infrared (NIR) light, offering promising applications in the fields of imaging and night vision technology. However, achieving high efficiency and thermal stability in these broadband NIR phosphors poses a significant challenge for their practical application. Here, we employ crystal field engineering to modulate the NIR characteristics of Cr3+-doped Gd3Ga5O12 (GGG). The Gd3MgxGa5-2xGexO12 (GMGG)7.5% Cr3+ (x = 0, 0.05, 0.15, 0.20, and 0.40) phosphors with NIR emission are developed through the cosubstitution of Mg2+ and Ge4+ for Ga3+ sites. This cosubstitution strategy also effectively reduces the crystal field strength around Cr3+ ions, which results in a significant enhancement of the photoluminescence (PL) full width at half-maximum (fwhm) from 97 to 165 nm, alongside a red shift in the PL peak and an enhancement of the PL intensity up to 2.3 times. Notably, the thermal stability of the PL behaviors is also improved. The developed phosphors demonstrate significant potential in biological tissue penetration and night vision, as well as an exceptional scintillation performance for NIR scintillator imaging. This research paves a new perspective on the development of high-performance NIR technology in light-emitting diodes (LEDs) and X-ray imaging applications.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Inorg Chem Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Inorg Chem Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos