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多色碳点复合荧光粉的一步制备及荧光特性研究
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作者 刘德鸿 李林江 +2 位作者 杨丹 李浩哲 郝艳玲 《材料科学》 2024年第4期510-516,共7页
采用溶剂热法制备了蓝色、绿色和黄绿色固态碳点复合荧光粉。荧光光谱表明,所制备的荧光粉存在两个荧光起源,为探究其荧光起源,用荧光激发谱、紫外可见吸收光谱、傅里叶变换红外吸收光谱及X射线光电子能谱对其光学性质和表面结构进行了... 采用溶剂热法制备了蓝色、绿色和黄绿色固态碳点复合荧光粉。荧光光谱表明,所制备的荧光粉存在两个荧光起源,为探究其荧光起源,用荧光激发谱、紫外可见吸收光谱、傅里叶变换红外吸收光谱及X射线光电子能谱对其光学性质和表面结构进行了表征与分析,结果表明,450 nm左右的荧光来源于柠檬酸在水热过程中产生的碳核,而540 nm左右随激发波长依赖的荧光来源于C=O相关的表面态。 展开更多
关键词 碳点 复合荧光 表面结构 荧光起源
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Franck-Condon Factors and Band Origins for MgH in the A2П-X2∑+ System
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作者 Xu Cheng Jiao Bai +1 位作者 Jian-ping Yin Hai-ling Wang 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2015年第3期253-256,I0001,共5页
We measure the dispersed spectrum of the A2H-X2E+ system of MgH using laser abla- tion/laser induced Fluorescence method and obtain the Frank-Condon factors and related transition frequencies of the A2H(v'=0)-X2... We measure the dispersed spectrum of the A2H-X2E+ system of MgH using laser abla- tion/laser induced Fluorescence method and obtain the Frank-Condon factors and related transition frequencies of the A2H(v'=0)-X2∑+(v"=0,1) system by analyzing the experimental spectrum. Also, we calculate the Franck-Condon factors and transition frequencies of the A2H-X2∑+ system of MgH. A comparison of our theoretical calculation and experimental results with other reported theoretical results was carried out as well. 展开更多
关键词 Franck-Condon factors Energy curve Vibrational frequencies Dispersed fluorescence
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