Photoluminescence properties of a blue-emitting phosphor Eu2+-activated Ca3ZnAl4O10
来源期刊：JOURNAL OF RARE EARTHS2010年第5期
论文作者：石小丽 严洁 施亮 乔学斌 徐孝镇
文章页码：693 - 696
摘 要：A new aluminate host material Ca3ZnAl4O10 doped with Eu2+ was prepared by a high-temperature solid-state reaction method, and a pure crystalline phase of Ca3ZnAl4O10 was confirmed with X-ray powder diffraction （XRD） measurement. The luminescent property was investigated with excitation and emission spectra. The phosphor could be excited by UV light from 220 nm to 400 nm and emitted a blue luminescence peaked at 450 nm, which corresponded to the 4f65d1→4f7 transition of Eu2+ ions. The dependence of luminescence intensities of Eu2+-doped Ca3ZnAl4O10 on the doping concentrations was investigated. The luminescence decay and the color coordinates were discussed in order to further investigate its potential applications for white light-emitting diode phosphors pumped by a near-UV chip.
石小丽1，严洁2，施亮3，乔学斌3，徐孝镇3
1. College of Chemistry, Chemical Engineering and Material Science, Soochow University2. Department of Earth Environmental Sciences, Pu-kyong National University3. Department of Physics, Pukyong National University
摘 要：A new aluminate host material Ca3ZnAl4O10 doped with Eu2+ was prepared by a high-temperature solid-state reaction method, and a pure crystalline phase of Ca3ZnAl4O10 was confirmed with X-ray powder diffraction （XRD） measurement. The luminescent property was investigated with excitation and emission spectra. The phosphor could be excited by UV light from 220 nm to 400 nm and emitted a blue luminescence peaked at 450 nm, which corresponded to the 4f65d1→4f7 transition of Eu2+ ions. The dependence of luminescence intensities of Eu2+-doped Ca3ZnAl4O10 on the doping concentrations was investigated. The luminescence decay and the color coordinates were discussed in order to further investigate its potential applications for white light-emitting diode phosphors pumped by a near-UV chip.
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