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| Er3 、Eu3 双掺杂LaOF荧光粉体的制备及光学性能研究 |
| Preparation and optical properties of Er3 , Eu3 Co-doped LaOF Phosphors |
| 投稿时间：2022-11-16 修订日期：2023-03-07 |
| DOI： |
| 中文关键词: Er3 Eu3 LaOF 光学性能 防伪油墨 |
| 英文关键词:Er3 Eu3 LaOF optical performance anti-counterfeiting ink |
| 基金项目:中国石油天然气股份有限公司石油化工研究院项目(2021210207000265) |
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| 中文摘要: |
| 摘 要：基于水热辅助固相法制备出Er3 、Eu3 离子共掺杂LaOF荧光粉，通过XRD、SEM和荧光分析仪对不同Er3 掺杂浓度下的LaOF: Eu3 荧光粉体的相组成、粒径分布、形貌及荧光光谱进行表征与分析。结果表明：在900 ℃的温度下煅烧，物相由前驱体LaF3转变为四方相LaOF，且随着Er3 掺杂浓度的升高，在365 nm与393 nm波长激发下均呈现出多色可调谐发光特性，其中365 nm激发下呈现自橙色光向黄色光的转变，而在393 nm光辐射下则由橙色光向品红色光过渡。将Er3 、Eu3 共掺杂LaOF荧光粉制成油墨并印制成图案后，当其受激于在365 nm与395 nm激发光时，可分别呈现肉眼可辨的橙色和紫色光发射，表明所制备的荧光粉有望在防伪领域具有一定的应用前景。 |
| 英文摘要: |
| Abstract: The rare earth ion Er3 , Eu3 double doped LaOF phosphors were prepared by the hydrothermal-assisted solid-phase method. The phase composition, particle size, morphology and fluorescence spectrum of LaOF: Eu3 phosphors doped with Er3 at different concentrations were characterized and analyzed by XRD, SEM and fluorescence analyzer. The results show that the precursor LaF3 of Phosphors is well transformed into tetragonal LaOF after calcining at 900 ℃, and with the increase of Er3 doping concentration, the luminescent properties of the phosphors show a good rule at the excitation wavelengths of 365 nm and 393 nm. Among them, the excitation at 365 nm shows the transition from orange light to yellow light, while the excitation at 393 nm shows the transition from orange light to magenta light. Finally, Er3 , Eu3 co doped LaOF phosphor is made into ink and printed into patterns, and when it is excited to excite light at 365 nm and 395 nm, the orange and purple light emission is visible, respectively, which shows that they can be used in the field of anti-counterfeiting. |
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