| 磷灰石结构荧光粉Ba10(PO4)6F2:Ce3+,Tb3+的合成、发光和能量传递 |
| Synthesis, Luminescent Properties and Energy Transfer Behavior of Apatite Phosphor Ba10(PO4)6F2: Ce3+,Tb3+ |
| 作者 | 单位 | E-mail | | 程少文 | 南京工业大学, 能源科学与工程学院, 南京 211816 | | | 张娜 | 轻工业部南京电光源材料科学研究所, 南京 210015
南京工业大学, 电光源材料研究所, 南京 210015 | zhangna8389@163.com | | 卓宁泽 | 轻工业部南京电光源材料科学研究所, 南京 210015
南京工业大学, 电光源材料研究所, 南京 210015 | | | 朱月华 | 轻工业部南京电光源材料科学研究所, 南京 210015
南京工业大学, 电光源材料研究所, 南京 210015 | | | 陈永浩 | 南京工业大学, 材料工程与科学学院, 南京 210009 | | | 蒋鹏 | 南京工业大学, 材料工程与科学学院, 南京 210009 | | | 杜文慧 | 南京工业大学, 材料工程与科学学院, 南京 210009 | | | 叶恩淦 | 南京工业大学, 材料工程与科学学院, 南京 210009 | | | 王海波 | 南京工业大学, 电光源材料研究所, 南京 210015 | wanghaibo88@163.com |
|
| 摘要: 采用高温固相法合成了系列Ce3+和Ce3+/Tb3+激活的具有磷灰石结构荧光粉Ba10（PO4）6F2。用X射线衍射（XRD）、扫描电镜（SEM）、激发和发射（PLE和PL）光谱对样品进行了表征分析。研究结果表明：所合成的荧光粉Ba10（PO4）6F2：Ce3+，Tb3+具有氟磷灰石结构，样品微观呈现不规则形貌。荧光粉Ba10-x（PO4）6F2：xCe3+的相对发射强度随着x增加而增强，当x=0.09时，荧光强度达到最大。荧光粉Ba10（PO4）6F2：Ce3+，Tb3+的激发光谱为240~330 nm的宽带，发射光谱呈现出Ce3+的5d→4f跃迁紫外光（335和358 nm）发射和Tb3+的4f→4f跃迁绿光（542 nm）发射。光谱特性表明，发光过程中存在Ce3+→Tb3+能量传递，能量传递效率可以达到60%。计算Ce3+和Tb3+的临界距离为0.79 nm，能量传递机理是偶极-偶极交互作用。此外，详细论述了Ce3+和Tb3+之间的能量传递和发光的过程。通过调节Tb3+的掺杂浓度，对荧光粉发光色坐标与Tb3+的掺杂浓度之间的关系也进行了研究，随着Tb3+的掺杂量从0增加0.52，荧光粉Ba10（PO4）6F2：Ce3+，Tb3+的发射光谱色坐标可以从（0.149 4，0.045 1）蓝色区变化到（0.280 1，0.585 3）绿色区。 |
| 关键词: 高温固相法 氟磷灰石 Ce3+/Tb3+激活荧光粉 发光 能量传递 |
| 基金项目: 国家重点研发计划（No.2017YFB0404300，2017YFB0404301），江苏省自然科学基金（No.BK20171128），江苏省科技成果转化（No.BA2017100）资助项目 |
| Abstract: A series of Ce3+-and Ce3+/Tb3+-activated Ba10(PO4)6F2 phosphors with apatite structure have been synthesized via high temperature solid-state reaction. X-ray diffraction (XRD), scanning electron microscopy (SEM), the photoluminenscence excitation (PLE) spectra and photoluminescence (PL) spectra were used to characterize samples. The results revealed that the fluorapatite structured Ba10(PO4)6F2:Ce3+,Tb3+ phosphor particles with irregular morphology have been obtained. The relative intensities of PL spectra of Ba10-x(PO4)6F2:xCe3+ phosphors increased with increasing x values, and reached the maximum at x=0.09. The as-prepared phosphors Ba10(PO4)6F2:Ce3+,Tb3+ phosphors exhibited broad excitation band ranging from 240 to 330 nm. The emission spectra of Ba10(PO4)6F2:Ce3+,Tb3+ phosphor showed the violet-emitting band centered at 335 and 358 nm and green light-emitting band centered at 542 nm, which originate from the 5d→4f transitions of Ce3+ and 4f→4f transitions of Tb3+, respectively. The spectral characteristics showed that the energy transfer occurs from Ce3+ to Tb3+ in Ba10(PO4)6F2:Ce3+,Tb3+ phosphors, and the energy transfer efficiency between Ce3+ and Tb3+ could reach up to 60%. The critical distance of Ce3+ and Tb3+ was calculated to be 0.79 nm, and the mechanism of energy transfer from Ce3+ to Tb3+ is dipole-dipole interaction. In addition, the energy transfer behavior and luminescence process were discussed in detail. By adjusting the concentration of Tb3+, the relationship between chromatic coordinate and the doping concentration of Tb3+ was studied. The Ba10(PO4)6F2:Ce3+,Tb3+ phosphors emission color could adjust from blue to green, and the chromatic coordinate tuned from (0.149 4, 0.045 1) to (0.280 1, 0.585 3) with increasing the concentration of Tb3+ from 0 to 0.52. |
| Keywords: high-temperature solid-state reaction fluorapatite Ce3+/Tb3+-activated phosphor luminescence energy transfer |
| 投稿时间：2018-08-23 修订日期：2018-11-22 |
| 摘要点击次数: 1837 |
| 全文下载次数: 1335 |
| 程少文,张娜,卓宁泽,朱月华,陈永浩,蒋鹏,杜文慧,叶恩淦,王海波.磷灰石结构荧光粉Ba10(PO4)6F2:Ce3+,Tb3+的合成、发光和能量传递[J].无机化学学报,2019,35(2):209-216. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
