期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 1, 期 3, 页码 500-505出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2tc00162d
关键词
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资金
- IT R&D program of MKE/IITA [2009-F-020-01]
- Samsung LED Co., Ltd
- National Research Foundation of Korea (NRF)
- Korea government (MEST) [2009-0094046]
- Research Institute of Advanced Materials (RIAM)
A novel blue-emitting phosphor on a phosphate-based host matrix, RbBaPO4:Eu2+ (RBP), was synthesized by a solid-state reaction. This phosphor could be excited efficiently by ultra violet-visible light in the 220-420 nm range to exhibit a highly efficient emission peak in the range of 420-440 nm. To investigate the possibility of commercial use, it was compared with the commercial blue phosphors of BaMgAl10O17:Eu2+ (BAM) and Sr3MgSi2O8:Eu2+ (SMS) to assess the photoluminescence properties. Compared to commercial phosphors, RBP displayed enhanced photoluminescence properties, in this case a high quantum efficiency and excellent thermal stability under near-Ultra Violet (n-UV) excitation. Furthermore, bright white light-emitting diodes (LEDs) were fabricated by integrating the RBP phosphor, along with commercial green/red phosphors, into n-UV LEDs. These results strongly suggest that the newly discovered RBP phosphor can be commercially utilized in UV-based white LEDs.
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