| 王珊,张粟,李晓东,刘爽,李成宇.化学通报,2022,85(12):1466-1474. |
| Mn4+、Zr4+掺杂ScTaO4深红色荧光粉的制备及发光性质的研究 |
| Preparation and luminescence properties of Mn4+ and Zr4+ doped ScTaO4 phosphors with deep red emission |
| 投稿时间：2022-04-04 修订日期：2022-05-24 |
| DOI： |
| 中文关键词: 高温固相法 荧光粉 光致发光 Mn4+ Zr4+ |
| 英文关键词:High temperature solid state method, Phosphor, Photo luminescence, Mn4+, Zr4+ |
| 基金项目:中国科学院科技服务网络计划项目(KFJ-STS-QYZD-2021-18-003)资助 |
|
| 摘要点击次数: 638 |
| 全文下载次数: 0 |
| 中文摘要: |
| 采用高温固相法制备了Mn4+单掺及Mn4+ - Zr4+共掺杂ScTaO4发光材料。利用X射线粉末衍射(XRD)、扫描电镜(SEM)、电子顺磁共振（EPR）以及光致发光光谱(PL)等手段研究了样品的结构、形貌、锰离子价态以及光致发光性质等。详细研究了掺杂Mn离子的价态、Mn离子发光的浓度猝灭和温度猝灭机理。研究发现Mn掺杂的ScTaO4荧光粉在655 nm处有较强的深红色发光，该发射来自Mn4+的2Eg → 4A2g跃迁。当Sc1-xTaO4: xMn4+中Mn4+离子掺杂浓度x为0.005，此时发光强度最大。Mn4+、Zr4+共掺不仅能有效提高Mn4+的发光强度而且可以减小其温度猝灭效应。Zr4+共掺杂造成的发光特性改变，为新型Mn4+掺杂荧光粉的设计和发光性能的调节提供了有价值的参考。 |
| 英文摘要: |
| The luminescent materials of Mn4+ singly doped and Mn4+ - Zr4+ co-doped ScTaO4 were prepared by high-temperature solid-state method. X-ray diffraction (XRD), scanning electron microscopy (SEM), electron paramagnetic resonance (EPR) and photoluminescence spectroscopy (PL) were used to study the structure，morphology, valence of Mn ions and photoluminescent properties of the samples. The valence state, concentration quenching and temperature quenching mechanisms of Mn ion doped samples were studied in details. Mn-doped ScTaO4 phosphor has a strong deep-red luminescence at 655 nm, which comes from the 2Eg → 4A2g transition of Mn4+. When the doping concentration of Mn4+ ion in Sc1-xTaO4: xMn4+ is 0.005, the emission intensity approaches its maximum. The co-doping of Zr4+ can not only effectively improve the emission intensity of Mn4+ but also increases its quenching temperature. The improvement of luminescent properties caused by Zr4+ co-doping provides valuable reference for the design of new Mn4+ doped phosphors and the adjustment of their luminescent properties.
Key words High temperature solid state method, Phosphor, Photo luminescence, Mn4+, Zr4+ |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |