Effect of light conversion agent on luminous properties of a new down-converting material SrAl₂O₄:Eu²⁺,Dy³⁺/light conversion agent

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• 作者：Yanan ZHU ((朱亚楠)) ; ^{zhuyanan_1987@126.com" class="auth_mail" title="E-mail the corresponding author} ; Zengyuan PANG ((逄增媛)) ; Jian WANG ((王 建)) ; Mingqiao GE ((葛明桥)) ; Sijin SUN ((孙思瑾)) ; Zehua HU ((胡泽华)) ; Jiahe ZHAI ((翟佳鹤)) ; Jiaxin GAO ((高佳欣)) ; Fusheng JIANG ((姜伏生))
• 关键词：SrAl2O4 ; Eu2+ ; Dy3+/light conversion agent ; emission ; afterglow brightness ; afterglow time ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：34
• 期：5
• 页码：483-488
• 全文大小：847 K

文摘

A new luminous material SrAl₂O₄:Eu²⁺,Dy³⁺/light conversion agent that can emit red light in the darkness after being excited was fabricated by combining light conversion agent on to SrAl₂O₄:Eu²⁺,Dy³⁺ particles through YsiX3. The morphology of the luminous materials was analyzed by scan electron microscopy (SEM). The emission behavior was evaluated by fluorescence spectrophotometric analysis and the results demonstrated that the emission spectra of samples had a redshift compared to SrAl₂O₄:Eu²⁺, Dy³⁺ and the emission intensity rose dramatically at ?rst and then decreased when the ratio of light conversion agent doping was over 1.4 wt.%. And the emission color of SrAl₂O₄:Eu²⁺,Dy³⁺/light conversion agent was tuned from green (SrAl₂O₄:Eu²⁺,Dy³⁺) to orange-red. Furthermore, the afterglow property was also investigated, and the results indicated that the afterglow brightness reached 6.5 cd/m², and as the light conversion agent concentration increased the brightness intensity decreased.