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Effect of Crystallite Size and Crystallinity on Photoluminescence Properties and Energy Transfer of Y6MoO12:Eu
【文件类型】 【消费金额】2.4 【文章页数】8 【会员操作】  
【文章作者】Li, Huaiyong;Pu, Xipeng;Yin, Jie;Wang, Xiaoqin;Yao, Shujuan;Noh, Hyeon Mi;Jeong, Jung Hyun
【文章摘要】      The phosphors Y6MoO12:Eu3+ have been synthesized via citrate complexation method at different calcination temperatures. The evolutions of the crystal structure and the photoluminescence (PL) properties were characterized by means of powder X-ray diffraction (XRD), Raman and PL spectra, respectively. It was revealed that a red emission could be obtained via three excitation channels, namely f-f transition of Eu3+ ions, charge-transfer transition from O-2 to Eu3+, and interband transition (IBT) of MoO6 groups. The PL spectra and their temporal decay character of Eu3+ ions depended on both crystal structure and excitation channel. The emission reduced with the crystallite size when Eu3+ ions were excited directly, but the emission evolved in a different model with the host lattices were excited. The effect of grain boundary and other lattice defect on the energy transfer and dissipation within the phosphors were discussed.
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【卷】99 【ISSUE】3 【ISSUEID】815B0005     【文章期份】2016    【发布日期】2016/8/11 17:03:30    点击率:0    打印    关闭
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