Luminescent properties of BaCl₂-Eu microcrystals embedded in a CsI matrix

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• 作者：A. Pushak ; V. Vistovskyy ; A. Voloshinovskii ; P. Savchyn ; O. Antonyak ; T. Demkiv ; Yu. Dacyuk ; S. Myagkota ; A. Gektin
• 关键词：Divalent europium ; Luminescence ; Decay kinetics ; BaCl2-Eu microcrystals
• 刊名：Radiation Measurements
• 出版年：2013
• 出版时间：September, 2013
• 年：2013
• 卷：56
• 期：Complete
• 页码：402-406
• 全文大小：648 K

文摘

The spectral-luminescent properties of CsI-BaCl₂(1?mol % )-Eu(0.02?mol % ) crystalline system are studied. Europium ion doped BaCl₂ microcrystals embedded in a CsI matrix are revealed on CsI-BaCl₂(1?mol % )-Eu(0.02?mol % ) freshly cleaved surface by the scanning electron microscopy. The size of microcrystals is shown to be within 0.5-5 microns. The luminescent parameters of the BaCl₂-Eu²⁺ microcrystals are shown to be similar to ones of a single crystal analogue. The 4f?¡ú?5d absorption transitions in europium ions and the reabsorption of the intrinsic emission of the CsI host are the main excitation mechanisms of europium luminescence in the BaCl₂ microcrystals.