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[1]周　佳,姚植彩,戴武斌*,等.Ce3+，Tb3+，Yb3+三掺杂CaAl2Si2O8下转换荧光粉的制备及其发光性能[J].武汉工程大学学报,2019,(05):447-452.[doi:10. 3969/j. issn. 1674?2869. 2019. 05. 007]
　ZHOU Jia,YAO Zhicai,DAI Wubin*,et al.Preparation and Luminescent Properties of Ce3+/ Tb3+/ Yb3+ Tri-Doped CaAl2Si2O8 Down-Conversion Phosphors[J].Journal of Wuhan Institute of Technology,2019,(05):447-452.[doi:10. 3969/j. issn. 1674?2869. 2019. 05. 007]
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Ce3+，Tb3+，Yb3+三掺杂CaAl2Si2O8下转换荧光粉的制备及其发光性能(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2019年05期
页码:
447-452
栏目:
材料科学与工程
出版日期:
2021-01-24

文章信息/Info

Title:
Preparation and Luminescent Properties of Ce3+/ Tb3+/ Yb3+ Tri-Doped CaAl2Si2O8 Down-Conversion Phosphors
文章编号:
20190507
作者:
周　佳; 姚植彩; 戴武斌*; 黄　珂; 胡　金; 许　硕; 徐　慢
武汉工程大学材料科学与工程学院，湖北 武汉 430205
Author(s):
ZHOU Jia; YAO Zhicai;  DAI Wubin*; HUANG Ke; HU Jin; XU Shuo; XU Man
School of Materials Science and Engineering，Wuhan Institute of Technology，Wuhan 430205，China
关键词:
能量转移; 发光性能; 下转换荧光粉; 硅基太阳能电池; CaAl2Si2O8：Ce3+; Tb3+; Yb3+
Keywords:
energy transfer; optical properties; down-conversion phosphor;  Si-based solar cell;  CaAl2Si2O8：Ce3+; Tb3+; Yb3+
分类号:
O482.31
DOI:
10. 3969/j. issn. 1674?2869. 2019. 05. 007
文献标志码:
A
摘要:
硅基太阳能电池作为目前技术最成熟、使用最广泛的光伏器件，其光电转换效率较低主要是由于太阳光谱与硅的最大吸收光谱不匹配造成的。为了解决这个问题并提升Yb3+的近红外光发射强度，采用高温固相法制备了CaAl2Si2O8：Ce3+,Tb3+,Yb3+系列荧光粉，并通过X射线衍射（XRD）分析仪和荧光光谱仪分析了该荧光粉样品的晶体结构、最佳掺杂浓度及发光性能。XRD分析结果表明掺杂离子Ce3+，Tb3+，Yb3+均占据Ca2+格位，并且掺杂少量的稀土离子不会改变基质CaAl2Si2O8（CASO）的晶体结构。荧光光谱分析表明由于在三掺杂荧光粉CaAl2Si2O8：Ce3+,Tb3+,Yb3+中存在着Ce3+→Tb3+→Yb3+的合作能量传递过程，因此在近紫外光的激发下，相对于其它荧光粉，该三掺杂荧光粉中Yb3+的近红外光发射强度得到明显增强，并且最佳掺杂浓度的荧光粉化学式为Ca0.655Al2Si2O8：0.07Ce3+,0.10Tb3+,0.06Yb3+。该三掺杂荧光粉可以将硅基太阳能电池吸收较弱的紫外光转换为吸收较强的近红外光，从而实现光谱修饰，最终达到提高其光电转换效率的目的。
Abstract:
As the most mature and widely used photovoltaic device， silica-based solar cells’ light-to-electric conversion efficiency was limited mainly due to the mismatch between the solar spectrum and the maximum absorption spectrum of silicon. To solve this problem and enhance the near-infrared emission intensity of Yb3+， a series of CaAl2Si2O8：Ce3+,Tb3+,Yb3+ phosphors were prepared by high temperature solid state reaction. The crystal structure， optimum doping concentrations and luminescence properties of the phosphors samples were analyzed by an X-ray diffraction （XRD） and fluorescence spectroscopy. XRD results show that Ce3+， Tb3+ and Yb3+ all occupy the Ca2+ lattices without significant changes in the crystal structure of CaAl2Si2O8. Fluorescence spectra indicate that the cooperative energy transfer process of Ce3+→Tb3+→Yb3+?in the tri-doped phosphors exists. Compared with other phosphors， the near-infrare demission intensity of Yb3+ for tri-doped phosphor CaAl2Si2O8：Ce3+,Tb3+,Yb3+ is significantly enhanced via energy transfer from Ce3+→Tb3+→Yb3+ under the excitation of near ultraviolet light， and the best doping concentration of phosphor is Ca0.655Al2Si2O8：0.07Ce3+,0.10Tb3+,0.06Yb3+. The above results show that the tri-doped phosphor can convert the ultraviolet light weakly absorbed by the Si-based solar cells into near-infrared light with strong absorption， thereby realizing the spectral modification and finally achieving the purpose of improving the light-to-electric conversion efficiency.

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备注/Memo

备注/Memo:
收稿日期：2019-03-25基金项目：湖北省技术创新专项（2016ACA160）；武汉工程大学博士启动基金（16QD28）；武汉工程大学第九届研究生教育创新基金（CX2017013）作者简介：周　佳，硕士研究生。E-mail： [email protected]*通讯作者：戴武斌，博士，特聘教授。E-mail： [email protected]引文格式：周佳，姚植彩，戴武斌，等. Ce3+，Tb3+，Yb3+三掺杂CaAl2Si2O8下转换荧光粉的制备及其发光性能［J］. 武汉工程大学学报，2019，41（5）：447-452.
更新日期/Last Update: 2019-10-29