| 燃烧法可控制备Eu~(3+)-Eu~(2+)共存Ca_(12)Al_(14)O_(32)F_2荧光粉及其荧光性能的研究 |
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| 引用本文： | 陈彩花,彭海龙,梁利芳,蒙丽丽,张丽霞.燃烧法可控制备Eu~(3+)-Eu~(2+)共存Ca_(12)Al_(14)O_(32)F_2荧光粉及其荧光性能的研究[J].发光学报,2016(8):932-939. |
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| 作者姓名： | 陈彩花 彭海龙 梁利芳 蒙丽丽 张丽霞 |
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| 作者单位： | 广西师范学院 化学与材料科学学院,广西 南宁,530001 |
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| 基金项目： | 国家自然科学基金(21161004)，广西自然科学基金(2011GXNSFA018048) |
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| 摘 要： | 采用燃烧法合成Ca_(12-x)Al_(14)O_(32)F_2∶xEu荧光粉,对样品进行了X射线粉末衍射(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)以及光致发光光谱等表征,探讨了燃烧温度、氟化铵、尿素、硼酸以及铕浓度等合成条件对荧光性能的影响。研究结果表明,利用燃烧法可以合成Eu~(3+)-Eu~(2+)共存、发光可调的荧光粉。通过改变合成条件,改变Eu~(2+)和Eu~(3+)的比例,荧光粉的发光颜色可表现为白光-橙红色-蓝白光-淡紫色-深蓝色-淡蓝色等变化。
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| 关 键 词： | Ca12 Al14 O32 F2 Eu3%2B-Eu2%2B 燃烧法可控合成 发光材料 |
Tunable Luminescence of Ca12 Al14 O32 F2:Eu2+,Eu3+Phosphors Prepared by Combustion Method |
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| Abstract: | A series of luminescent emission-tunable phosphors Ca12 Al14 O32 F2:xEu were synthesized by combustion method. X-ray powder diffraction ( XRD) , X-ray photoelectron spectroscopy ( XPS) , scanning electron microscope ( SEM) and photoluminescence spectra ( PL) were used to character-ize the phosphors. The effects of combustion temperature, ammonium fluoride, urea, boric acid and co-activator Eu3+-Eu2+ on the luminescent properties of the phosphors were also studied. The results show that the emission color of the prepared phosphors can be tuned appropriately from orange red to blue by adjusting the synthesis condition due to the coexistence of Eu3+ and Eu2+. |
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| Keywords: | Ca12 Al14 O32 F2 combustion method Eu3+ Eu2+ phosphor |
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