| 具有优异热稳定性的Sr1-xZrSi2O7∶xDy3+荧光粉的制备及其发光性能 |
| Preparation and luminescent performance of Sr1-xZrSi2O7∶xDy3+ phosphor with high thermal stability |
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| 摘要: 采用高温固相法制备了Sr1-xZrSi2O7∶xDy3+荧光粉，并用X射线衍射仪、扫描电子显微镜和荧光光谱仪对其晶体结构、形貌、光致发光特性和热稳定性进行了研究。结果表明，该荧光粉可以在353 nm的近紫外光激发下获得蓝光(493 nm)和橙红光(581 nm)发射峰，这2个峰分别归属于Dy3+离子的4F9/2→6H15/2和4F9/2→6H13/2能级跃迁。在该荧光粉中，Dy3+的猝灭浓度为0.03，猝灭机制是偶极-偶极相互作用。当温度升高到150℃时，其发光强度仍可以保持室温的83%，具有良好的热稳定性。 |
| 关键词: Sr1-xZrSi2O7∶xDy3+ 荧光粉 热稳定性 浓度猝灭 |
| 基金项目: 黑龙江省教育厅科研项目(No.135109215)资助。 |
| Abstract: Sr1-xZrSi2O7∶xDy3+ phosphors were prepared by using the high-temperature solid-state method. The crystal structure, microscopic morphology, luminescence performance, and thermal stability were studied by X-ray diffractometer, scanning electron microscope, and spectrophotometer, respectively. The results indicate that SrZrSi2O7 has a monoclinic structure and Sr2+ ions are partially occupied by Dy3+ ions. The crystal structure is not affected evidently by doping. Sr1-xZrSi2O7∶xDy3+ phosphors can be excited by near-ultraviolet light. Under 353 nm radiation, the phosphors generate blue light (493 nm) and orange-red light (581 nm) emission peaks, and they can be attributed to the electron transition from 4F 9/2 to 6H15/2 and 6H13/2 energy level transitions, respectively. The quenching concentration of Dy3+ ions is 0.03 and the quenching mechanism belongs to dipole-dipole interaction. The emission intensity of Dy3+ ions was kept at 83% when the temperature increased to 150 ℃. The electronic traps and the structural rigidity of SrZrSi2O7 contribute to the excellent thermal stability of the luminescent materials. |
| Keywords: Sr1-xZrSi2O7∶xDy3+ phosphor thermal stability concentration quenching |
| 投稿时间：2024-03-26 修订日期：2024-12-08 |
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| 巴学巍,程诚,张怀康,张德庆,李淑华.具有优异热稳定性的Sr1-xZrSi2O7∶xDy3+荧光粉的制备及其发光性能[J].无机化学学报,2025,41(2):357-364. |
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