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NaY0.98-xF4:Ybx/Er0.02纳米晶体的制备及表征

Release Time:2019-03-11  Hits:

Indexed by: Journal Article

Date of Publication: 2012-12-15

Journal: 中国科技论文

Volume: 7

Issue: 12

Page Number: 894-897

ISSN: 2095-2783

Key Words: 上转换;NaYF4:Yb/Er;六方相

Abstract: 以高温油相法合成了NaY0.98-xF4:Ybx/Er0.02(x=0.2、0.4、0.6、0.8、0.98)纳米晶体,并通过X射线粉末衍射(XRD)、扫描电子显微镜(SEM)和荧光分光光度计对制备的产品进行表征.XRD结构显示合成的NaY0.98-xF4:Ybx/Er0.02产品均为六方相;SEM结果表明晶体呈六边形盘状;上转换荧光光谱显示在相同激发功率条件下,随着Yb3+掺杂浓度的提高,绿光和红光的发光强度均降低,红光/绿光强度比升高.

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