【摘 要】
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LixEuxSr1-2xMoO4 red phosphors were synthesized via a facile hydrothermal method with various reaction time and ion contents of Eu3+ and Li+.As-synthesized samp
【机 构】
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School of Materials Science and Engineering
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LixEuxSr1-2xMoO4 red phosphors were synthesized via a facile hydrothermal method with various reaction time and ion contents of Eu3+ and Li+.As-synthesized samples were characterized by X-ray diffraction (XRD),thermogravimetry (TG),field emission scanning electron microscopy (FE-SEM) and fluorescence spectrophotometry.The XRD results revealed the formation of scheelite-like phosphor structures.The excitation spectra indicated the presence of two main excitation peaks located at 396 and 466 nm,suggesting that this phosphor could be excited well by GaN-based near-UV and blue LED chips.The emission spectra under 466 nm excitation exhibited dominant peaks centered at 614 nm.The influence of reaction time and ions content on the luminescent properties of LixEuxSr1-2xMoO4 was also investigated.The results indicated that reaction time of 48 h was appropriate,and the maximum luminescent intensity was obtained when a molar ratio of 40％ ions content was employed.
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