| Microwave-promoted pure host phase for red emission CaS：Eu2＋ phosphor from single CaSO4 precursor and the photoluminescence property |
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| 引用本文： | 马健,陆启飞,王延泽,卢志娟,孙亮,董晓菲,王达健. Microwave-promoted pure host phase for red emission CaS：Eu2＋ phosphor from single CaSO4 precursor and the photoluminescence property[J]. 中国物理 B, 2014, 0(8): 548-551 |
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| 作者姓名： | 马健 陆启飞 王延泽 卢志娟 孙亮 董晓菲 王达健 |
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| 作者单位： | [1]Institute of Materials Physics, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China; [2]Tianjin Key Laboratory for Photoelectronic Materials and Devices, Tianjin 300384, China; [3]Key Laboratory of Display Materials and Photoelectronic Devices (Tianjin University of Technology), Ministry of Education, Tianjin 300384, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China(Grant Nos.21076161,50802062,and 50872091) |
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| 摘 要： | We report a novel approach to obtaining a classical blue-green excitable CaS：Eu2＋ phosphor with desired red emission by microwave （MW） firing procedure in the absence of adding elemental sulphur. The disturbing effect of MW electro- magnetic field on decomposition of CaSO4 into CaS activated by europium is distinctly observed to give pure host phase without adding any elemental sulphur and carbon. The host phase evolution is observed to be highly dependent on the variation of applied MW power from X-ray diffraction （XRD） patterns and the corresponding photoluminescence （PL）, and a maximum PL intensity at 1100 W of MW power is acquired for the obtained purer host phase. The non-thermal and non-equilibrium effects by MW are revealed to correlate with the interaction between polar structure of the host and applied electromagnetic field. The results demonstrate an optional procedure to prepare this red-emitting phosphor in an effective, environment-friendly and scalable approach for phosphor production in the application of bio-illumination for plant cultivation and artificial photosynthesis.
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| 关 键 词： | 光致发光性质 红光发射 微波促进 荧光粉 硫酸钙 CAS 主机 前体 |
Microwave-promoted pure host phase for red emission CaS:Eu~(2+) phosphor from single CaSO_4 precursor and the photoluminescence property |
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| 《Chinese Physics》. Microwave-promoted pure host phase for red emission CaS:Eu~(2+) phosphor from single CaSO_4 precursor and the photoluminescence property[J]. Chinese Physics B, 2014, 0(8): 548-551 |
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| Authors: | 《Chinese Physics》 |
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| Abstract: | We report a novel approach to obtaining a classical blue-green excitable CaS:Eu2+phosphor with desired red emission by microwave(MW) firing procedure in the absence of adding elemental sulphur. The disturbing effect of MW electromagnetic field on decomposition of CaSO4 into CaS activated by europium is distinctly observed to give pure host phase without adding any elemental sulphur and carbon. The host phase evolution is observed to be highly dependent on the variation of applied MW power from X-ray diffraction(XRD) patterns and the corresponding photoluminescence(PL),and a maximum PL intensity at 1100 W of MW power is acquired for the obtained purer host phase. The non-thermal and non-equilibrium effects by MW are revealed to correlate with the interaction between polar structure of the host and applied electromagnetic field. The results demonstrate an optional procedure to prepare this red-emitting phosphor in an effective, environment-friendly and scalable approach for phosphor production in the application of bio-illumination for plant cultivation and artificial photosynthesis. |
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| Keywords: | red emission calcium sulfide microwave energy |
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