Effect of C3N6H6 on Luminescent Properties of SrSi2N2O2:Eu2+ Yellow Phosphors Prepared by Microwave Reaction Method

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• 作者：Yeai Zhang ; Xiaotang Liu ; ^{xtliu@scau.edu.cn} ; Bingfu Lei ; Huaen Wang ; Quanmin Sun
• 关键词：LED ; Microwave ; SrSi2N2O2 ; Excitation spectra ; Nitride
• 刊名：Energy Procedia
• 出版年：2012
• 期刊代码：P136_18766102
• 类别：pw
• 出版时间：2012
• 卷：16
• 期：part_PA
• 页码：391-396
• 文件大小：388 K

摘要

In this paper, SrSi2N2O2:Eu2+ yellow phosphors were prepared by microwave reaction method with C3H6N6 as a nitrogen source. The structural properties were studied by X-ray diffraction. The results show that: Eu2+ ions in SrSi2N2O2 system form a continuous solid solution. The broad intense excitation is from 5d-4f transition of Eu2+ ions, ranging from 350 to 470 nm. Yellow light-emitting phosphors with excellent luminescence properties can be obtained by the right proportion of ingredients and sintering for 35 min under reduction atmosphere. What's more, C3H6N6 is a must. Increasing the concentration of Eu2+ within certain limits can also enhance the luminescent properties. If the flux is felicitous, emission peak will gradually red shift, from yellow green (538 nm) to yellow (560 nm).