Enhancement of luminescence properties and the role of ZnO in Tb3+ ions doped zinc aluminum phosphate glasses |
| |
| Affiliation: | 1. Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei 11221, Taiwan;2. Department of Material Science and Engineering, National United University, Miao-Li 36063, Taiwan;3. Department of Industrial Design, National United University, Miao-Li 36063, Taiwan;4. Department of Electronic Engineering, National United University, Miao-Li 36063, Taiwan;1. Departamento de Física, Universidad de La Laguna, Av. Astrofísico Francisco Sánchez, La Laguna, Tenerife 38206, Spain;2. Postdoctoral Research Fellow, Department of Chemical and Environmental Engineering, University of Toledo, USA;3. MALTA Consolider Team and Instituto de Materiales y Tecnología (IMN), Universidad de La Laguna, Tenerife 38206, Spain;1. Institut des Molécules et Matériaux du Mans (IMMM), UMR CNRS 6283, Université du Maine, Av. O. Messiaen, 72085 Le Mans Cedex 09, France;2. Laboratoire de Chimie Inorganique, Université de Sfax, Faculté des Sciences de Sfax, BP 1171, 3000 Sfax, Tunisia;3. Laboratoire de Photonique d’Angers (LPHIA), Université d’Angers, 2Bd. Lavoisier, 49045 Angers, France;1. Department of Physics, DAV College, Amritsar, Punjab 143001, India;2. Department of Physics, Guru Nanak Dev University, Amritsar, Punjab 143005, India;1. Department of Physics, Gandhigram Rural University, Gandhigram 624302, India;2. Radiological Safety Division, IGCAR, Kalpakkam 603102, India;1. College of Fundamental Studies, Shanghai University of Engineering Science, Shanghai, 201620, China;2. Department of Physics and Electronic Science, Liupanshui Normal University, Liupanshui, 553004, China;3. School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China |
| |
| Abstract: | Terbium ion doped zinc aluminum phosphate (ZAP) glasses with composition (90?x)((90?y)P2O5–10Al2O3–yZnO)–xTb2O3 (x=0.5–9 in mol% and y=30, 35, 40 in mol%) have been prepared by melt quenching method, and the effects of the Tb2O3 and ZnO content on the luminescence properties have been studied by photoluminescence spectroscopies. It was found that the green emission peaked at 544 nm is significantly enhanced under higher Tb2O3 content, meanwhile the sensitization effect of ZnO content is confirmed from the enhanced main emission. The quenching effect attributed to the resonant energy transfer through the cross-relaxation mechanism is observed when Tb2O3 concentration is beyond 2.5 mol% due to the fact that more Tb3+ ions enhance the 4f→5d and 4f→4f electronic transitions through the dipole–dipole (d–d) interaction. Also, ZnO plays a role of the disperser to prevent non-radiative de-excitation process. A characteristic luminescence image of the (100?x)(60P2O5–10Al2O3–30ZnO)·xTb2O3 series glasses under UV excitation at 366 nm is presented for the first time, and the transition of luminescence suggests that the Tb3+-doped ZAP glasses are suitable for green and dual-color blue/green LED applications by modulation of Tb and ZnO composition. |
| |
| Keywords: | Zinc aluminum phosphate glasses Luminescence properties Quenching effect UV–vis absorption |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
