Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED
Eu2 doped silicate glasses were prepared of the system 52SiO248MO: xEu2(in molar ratio, M=Ca, Sr, Ba; x=1, 3, 5, 7, 9) by a high temperature melt-quenching method in a reducing atmosphere. Glass ceramics containing MSiO3:Eu2(M=Ca, Sr, Ba) nano-phosphors were obtained after the heat treatment of the...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
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2012
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| Online Access: | http://hdl.handle.net/20.500.11937/33851 |
| _version_ | 1848754061569949696 |
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| author | Cui, Z. Jia, Guohua Deng, D. Hua, Y. Zhao, S. Huang, L. Wang, H. Ma, H. Xu, S. |
| author_facet | Cui, Z. Jia, Guohua Deng, D. Hua, Y. Zhao, S. Huang, L. Wang, H. Ma, H. Xu, S. |
| author_sort | Cui, Z. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Eu2 doped silicate glasses were prepared of the system 52SiO248MO: xEu2(in molar ratio, M=Ca, Sr, Ba; x=1, 3, 5, 7, 9) by a high temperature melt-quenching method in a reducing atmosphere. Glass ceramics containing MSiO3:Eu2(M=Ca, Sr, Ba) nano-phosphors were obtained after the heat treatment of the glass samples. The excitation, emission spectra and lifetime decay curves of 4f65d 1?4f7 of Eu2 were measured and interpreted with respect to their crystal structures and multi-site occupations of divalent europium in the hosts. Their excitation bands mainly extend from 450 to 250 nm, which is adaptable to the main emission region of the UV LED chip. With UV light excitation, the Eu2 emission in CaSiO3, SrSiO 3 and BaSiO3 shows blue, green and yellow colors centered at 440, 505 and 555 nm, respectively. The critical Eu2concentration was studied and determined to be x=5 for both CaSiO3 and SrSiO 3 and x=7 for BaSiO3 phosphors. The results show that the Eu2 doped glass ceramic phosphors containing MSiO3 (M=Ca, Sr, Ba) nano-crystals can be used as potential matrix materials for a high power white LED pumped by the UV LED chip. © 2011 Elsevier B.V. All rights reserved. |
| first_indexed | 2025-11-14T08:34:25Z |
| format | Journal Article |
| id | curtin-20.500.11937-33851 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:34:25Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-338512023-08-02T06:39:08Z Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED Cui, Z. Jia, Guohua Deng, D. Hua, Y. Zhao, S. Huang, L. Wang, H. Ma, H. Xu, S. Eu2 doped silicate glasses were prepared of the system 52SiO248MO: xEu2(in molar ratio, M=Ca, Sr, Ba; x=1, 3, 5, 7, 9) by a high temperature melt-quenching method in a reducing atmosphere. Glass ceramics containing MSiO3:Eu2(M=Ca, Sr, Ba) nano-phosphors were obtained after the heat treatment of the glass samples. The excitation, emission spectra and lifetime decay curves of 4f65d 1?4f7 of Eu2 were measured and interpreted with respect to their crystal structures and multi-site occupations of divalent europium in the hosts. Their excitation bands mainly extend from 450 to 250 nm, which is adaptable to the main emission region of the UV LED chip. With UV light excitation, the Eu2 emission in CaSiO3, SrSiO 3 and BaSiO3 shows blue, green and yellow colors centered at 440, 505 and 555 nm, respectively. The critical Eu2concentration was studied and determined to be x=5 for both CaSiO3 and SrSiO 3 and x=7 for BaSiO3 phosphors. The results show that the Eu2 doped glass ceramic phosphors containing MSiO3 (M=Ca, Sr, Ba) nano-crystals can be used as potential matrix materials for a high power white LED pumped by the UV LED chip. © 2011 Elsevier B.V. All rights reserved. 2012 Journal Article http://hdl.handle.net/20.500.11937/33851 10.1016/j.jlumin.2011.08.009 restricted |
| spellingShingle | Cui, Z. Jia, Guohua Deng, D. Hua, Y. Zhao, S. Huang, L. Wang, H. Ma, H. Xu, S. Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED |
| title | Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED |
| title_full | Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED |
| title_fullStr | Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED |
| title_full_unstemmed | Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED |
| title_short | Synthesis and luminescence properties of glass ceramics containing MSiO3:Eu2 (M=Ca, Sr, Ba) phosphors for white LED |
| title_sort | synthesis and luminescence properties of glass ceramics containing msio3:eu2 (m=ca, sr, ba) phosphors for white led |
| url | http://hdl.handle.net/20.500.11937/33851 |