Studies on Structure and Fluorescence Spectra of High-pressure-treated EuI2

Abstract

Abstract: The structure and fluorescence properties of high-pressure-reated EuI₂ were studied.The structural change of EuI₂ from monoclinic to orthorhombic and the increase of both structural symmetry and coordination number of Eu²⁺ were observed respectively.It was found that high-pressure treatment could split the energy levels of 4f⁶5d and made the central energy levels lower so as to induce the red shift of emission spectra.Moreover,a new emission peak (449 nm) is assigned and a new phase(EuI₂-Ⅴ) is reported.

Key words: High-pressure, EuI₂, Crystal structure, Fluorescence spectra

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WANG Lin-Tong, WANG Shi-Hua, ZHAO Xin-Hua, SUN Ji-Rong. Studies on Structure and Fluorescence Spectra of High-pressure-treated EuI₂[J]. Chem. J. Chinese Universities, 1996, 17(10): 1509.

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Studies on Structure and Fluorescence Spectra of High-pressure-treated EuI₂

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