Host-sensitized phosphorescence of Mn4+, Pr3+,4+ and Nd3+ in MgAl2Si2O8 |
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| Authors: | Esra Çırçır Nilgun Ozpozan Kalaycioglu |
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| Affiliation: | 1. Department of Materials Science and Engineering, Faculty of Engineering, Karamano?lu Mehmetbey University, Karaman, 70200, Turkey;2. Department of Chemistry, Faculty of Science, Erciyes University, Kayseri 38039, Turkey;1. Physics Department, School of Sciences, Tianjin University of Science & Technology, Tianjin 300222, China;2. The Key Laboratory of Weak Light Nonlinear Photonics, Ministry of Education, Nankai University, Tianjin 300457, China;1. Research and Development Centre, Bharathiar University, Coimbatore 641046, TN, India;2. Department of Physics, Panimalar Engineering College, Chennai 600123, TN, India;3. New Technologies Research Centre, University of West Bohemia, Plzeň 30614, Czech Republic;4. Centre for Nanoscience and Technology, Anna University, Chennai 600025, India;5. Department of Physics, R.V. Govt. Arts College, Chengalpet 603001, TN, India;1. Departamento de Química, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, ICEB II, Sala 67, 35400-000, Ouro Preto, MG, Brazil;2. Departamento de Física, ICEx, UFMG, C.P. 702, 30123-970, Belo Horizonte, MG, Brazil |
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| Abstract: | Mn4+ doped and Pr3+,4+, Nd3+ co-doped MgAl2Si2O8-based phosphors were first of all synthesized about 1300 °C. They were characterized by thermogravimetry (TG), differential thermal analysis (DTA), X-ray powder diffraction (XRD), photoluminescence (PL) and scanning electron microscopy (SEM). The luminescence mechanism of the phosphors, which showed broad red emission bands in the range of 610–715 nm and had a different maximum intensity when activated by UV illumination, was discussed. Such a red emission can be attributed to the intrinsic d–d transitions of Mn4+. |
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