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Preparation and luminescence characterization of GGAG:Ce3+,B3+ for a white light-emitting diode
被引:19
作者:
Kang, Jun-Gill
[1
]
Kim, Myung-Kyo
[2
]
Kim, Kwang-Bok
[3
]
机构:
[1] Chungnam Natl Univ, Dept Chem, Taejon 305764, South Korea
[2] Alti Elect Co Ltd, Gyeonggi Do 449882, South Korea
[3] Kumho Elect Inc, Gyeonggi Do 449883, South Korea
关键词:
inorganic compounds;
oxide;
luminescence;
X-ray diffraction;
optical properties;
D O I:
10.1016/j.materresbull.2007.10.001
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
We prepared Gd3Ga2Al3O12 (GGAG) co-doped with trivalent cerium and boron ions and investigated its luminescence properties as a: function of the B3+ concentration. The luminescence intensity was enhanced markedly by adding B3+ as a co-dopant. The non-boron-doped GGAG:Ce3+ converted less than 10% of the absorbed blue light into luminescence. As the B3+ concentration increased, Q increased and reached a maximum of Q = 21% at 1.5 moles in GGAG:Ce3+. White light closer to daylight with good color-rendering index properties was generated with the proper combination of yellow emission from GGAG:Ce3+,B3+ and blue emission from a GaN chip. (C) 2007 Elsevier Ltd. All rights reserved.
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页码:1982 / 1988
页数:7
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