Host-sensitized phosphorescence of Mn{sup 4+}, Pr{sup 3+,4+} and Nd{sup 3+} in MgAl{sub 2}Si{sub 2}O{sub 8}
- Department of Materials Science and Engineering, Faculty of Engineering, Karamanoglu Mehmetbey University, Karaman, 70200 (Turkey)
- Department of Chemistry, Faculty of Science, Erciyes University, Kayseri 38039 (Turkey)
Highlights: Black-Right-Pointing-Pointer The new red phosphors were synthesized in the MgAl{sub 2}Si{sub 2}O{sub 8} system. Black-Right-Pointing-Pointer These systems were characterized with DTA/TG, XRD, SEM and PL. Black-Right-Pointing-Pointer The excitation and emission mechanisms were explained. -- Abstract: Mn{sup 4+} doped and Pr{sup 3+,4+}, Nd{sup 3+} co-doped MgAl{sub 2}Si{sub 2}O{sub 8}-based phosphors were first of all synthesized about 1300 Degree-Sign 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 Mn{sup 4+}.
- OSTI ID:
- 22212507
- Journal Information:
- Materials Research Bulletin, Vol. 47, Issue 5; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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