Flux synthesis, crystal structure, and luminescence properties of a new europium fluoride-silicate: K5Eu2FSi4O 13

Pei Yun Chiang, Tsai Wei Lin, Jian Hung Dai, Bor Chen Chang, Kwang Hwa Lii

研究成果: 雜誌貢獻期刊論文同行評審

41 引文 斯高帕斯(Scopus)

摘要

The crystal structure and luminescence properties of flux-grown crystals of a new europium(III) fluoride-silicate, K5Eu2FSi 4O13, are reported. The structure consists of octahedral dimers of the composition [Eu2O10F], which are linked by unbranched tetrasilicate chains to form a 3-D framework with 5- and 6-ring channels parallel to the b axis where the K+ cations are located. The sharp peaks in the room-temperature emission spectrum are assigned. The number of lines in the region for the 5D07F0 transition and the relative intensities of the 5D07F1 and 5D07F2 transitions confirm the presence of two local Eu3+ environments and strongly distorted Eu3+-ligand surroundings. The room-temperature fluorescence decay curves are well fit by a single-exponential function yielding a lifetime value of about 2.0 ms. Crystal data: monoclinic, space group P21/m, a = 7.1850(2) Å, b = 5.7981(2) Å, c = 18.1675(6) Å, β = 92.248(2)°, and Z = 2.

原文???core.languages.en_GB???
頁(從 - 到)3619-3622
頁數4
期刊Inorganic Chemistry
46
發行號9
DOIs
出版狀態已出版 - 30 4月 2007

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