Luminescence of the elpasolite series M^I₂M^IIMCl₆ (M^I=Cs, Rb; M^II=Li, Na; M=Lu, Y, Sc, In) doped with europium using synchrotron radiation excitation

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• 作者：Peter A. Tanner^a ; ^{peter.a.tanner@gmail.com} ; Chang-Kui Duan^b ; Guohua Jia^c ; Bing-Ming Cheng^d
• 关键词：Divalent europium ; Trivalent europium ; Ultraviolet emission ; Elpasolite lattice ; Synchrotron radiation
• 刊名：Journal of Solid State Chemistry
• 出版年：2012
• 期刊代码：130_00224596
• 类别：ch
• 出版时间：April, 2012
• 卷：188
• 期：Complete
• 页码：105-108
• 文件大小：310 K

摘要

The excitation and emission spectra of a series of cubic hexachloroelpasolites doped with europium have been investigated using synchrotron radiation at 10 K. Besides the Eu³⁺ emission from ⁵D_J (J=0-3) multiplets, emission from ⁵H₃ is also observed for Cs₂NaIn_0.995Eu_0.005Cl₆, since the gap to the next lowest level is spanned by seven phonons. The excitation spectra of samples indicate impurities due to oxygen and divalent europium. Broad band emission from Eu²⁺ is reported from the crystalline samples grown in vacuum by the Bridgman process, with the maximum wavelength shifting to the red with increasing lattice parameter for the series Cs₂NaMCl₆:Eu²⁺ (M=Lu, Y, Eu).