| Ce3+,Eu2+共掺Ba3Si6O12N2荧光粉发光特性及能量传递研究 |
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| 引用本文： | 张云鹏,李永杰,陈观通,陈晓春.Ce3+,Eu2+共掺Ba3Si6O12N2荧光粉发光特性及能量传递研究[J].人工晶体学报,2019,48(6):997-1002. |
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| 作者姓名： | 张云鹏 李永杰 陈观通 陈晓春 |
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| 作者单位： | 北京化工大学,北京,100029;稀土材料国家工程研究中心,有研科技集团有限公司,有研稀土新材料股份有限公司,北京100088 |
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| 基金项目： | National Key Research and Development Program of China(2017YFB0404301) |
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| 摘 要： | 通过高温固相法制备了一系列Ce3+/Eu2+共掺杂的Ba3Si6O12N2,利用X射线衍射(XRD)研究了其晶体结构.研究表明,Ba3Si6O12N2∶ Ce3+,Eu2+荧光粉在338 nm光激发下可以发射525 nm的绿光,且具有较大的半峰宽.研究还发现,单掺Ce3的发射光谱和单掺Eu2+的发射光谱存在交叠,同时Ce3+的5d1最低能级能量低于Eu2+的4f65d1最低能级,这二者共同证实了可能存在Ce3+到Eu2+的能量转移现象.同时还研究了Ce3+浓度对Ba(2.7-y)Si6O12N2∶0.3Eu2+,yCe3+(0≤y≤0.1)系列荧光粉发光强度和波长的影响.热猝灭性能研究表明,Ce3+引入可显著影响体系的热猝灭性能.
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| 关 键 词： | Ba3Si6O12N2∶Ce3+ Eu2+荧光粉 固相反应 能量传递 |
Study on the Luminescent Properties and Energy Transfer of Ba3Si6O12N2 ∶Ce3+ , Eu2+ Phosphor |
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| ZHANG Yun-peng,LI Yong-jie,CHEN Guan-tong,CHEN Xiao-chun.Study on the Luminescent Properties and Energy Transfer of Ba3Si6O12N2 ∶Ce3+ , Eu2+ Phosphor[J].Journal of Synthetic Crystals,2019,48(6):997-1002. |
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| Authors: | ZHANG Yun-peng LI Yong-jie CHEN Guan-tong CHEN Xiao-chun |
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| Abstract: | A series of Ce3+/Eu2+ doped Ba3Si6O12N2 were prepared via conventional solid-state reactions.The structure of Ce3+/Eu2+ doped Ba3Si6O12N2 was investigated by X-ray diffraction (XRD).Photoluminescence (PL) properties of Ba3Si6O12N2∶ Ce3+,Eu2+ phosphor show a broad green emission band with a peak at 525 nm and under 338 nm light irradiation.The energy transfer from Ce3+ to Eu2+ was confirmed by the spectral overlap of Ba3Si6O12 N2 ∶ Eu2+ PLE excitation spectra and Ba3Si6O12N2 ∶ Ce3+emission spectrum,as well as the gap between lowest energy level of 5d1 excited state of Ce3 + and 4f65d1 excited state of Eu2+.The Ce3+ concentration dependent of Eu2+ emission intensity and redshift of wavelength in Ba(2.7-y) Si6O12N2∶0.3Eu2+,yCe3+ (0 ≤y ≤0.1) phosphor was studied in detail.It is revealed that the co-doping of Ce3+ in Ba3Si6O12N2∶ Eu2+ phosphor has a great influence on thermal quenching property. |
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