| 引用本文: | 刘月,范浩爽,孟宪国,许英朝,洪俊煌,林振鹏,李浩来.CaSrSiO4∶Sm3+, Eu3+红色荧光粉的发光性能和能量传递研究[J].材料科学与工艺,2025,33(3):67-77.DOI:10.11951/j.issn.1005-0299.20230311. |
| LIU Yue,FAN Haoshuang,MENG Xianguo,XU Yingchao,HONG Junhuang,LIN Zhenpeng,LI Haolai.Study on luminescence properties and energy transfer of CaSrSiO4∶Sm3+, Eu3+ red phosphors[J].Materials Science and Technology,2025,33(3):67-77.DOI:10.11951/j.issn.1005-0299.20230311. |
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| CaSrSiO4∶Sm3+, Eu3+红色荧光粉的发光性能和能量传递研究 |
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刘月1,范浩爽1,孟宪国2,许英朝1,3,洪俊煌1,林振鹏1,李浩来1
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(1.厦门理工学院 光电与通信工程学院,福建 厦门 361024;2.北部湾大学 理学院,广西 钦州 535011;3.厦门理工学院 福建省光电技术与器件重点实验室,福建 厦门 361024)
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| 摘要: |
| 采用高温固相法制备CaSrSiO4∶Sm3+, Eu3+系列荧光粉,并研究了CaSrSiO4∶Sm3+, Eu3+的物相组成、形貌、发光性能、热稳定性以及存在的能量传递现象。物相分析表明,Sm3+与Eu3+单掺和共掺均没有改变基质晶体结构,形成了单一纯相。CaSrSiO4∶Sm3+单掺荧光粉在405 nm激发下的最强发射峰位于597 nm处,来源于4G5/2→6H7/2跃迁。双掺荧光粉CaSrSiO4∶Sm3+, Eu3+的荧光光谱表明,Sm3+与Eu3+之间存在能量传递,能量传递通过电偶极-电偶极相互作用实现,传递效率为40.6%。CIE色度坐标由橙红光区域向纯红光区域偏移。此外,CaSrSiO4∶Sm3+,Eu3+在423 K下的发光强度为室温下的94.85%,表现出优异的热稳定性。将样品与395 nm紫外LED芯片进行封装,封装的器件可发出较高显色指数和较低色温的白光。CaSrSiO4∶Sm3+,Eu3+系列荧光粉有望成为白光LED红色荧光粉候选材料。 |
| 关键词: CaSrSiO4∶Sm3+,Eu3+ 红色荧光粉 物相结构 发光性能 能量传递 能级跃迁 白光LED |
| DOI：10.11951/j.issn.1005-0299.20230311 |
| 分类号:O482.31 |
| 文献标识码:A |
| 基金项目:福建省自然科学基金面上项目资助(2019J01876)；厦门市科技计划重大项目(3502ZCQ20191002)；北部湾大学高层次人才科研项目(23KYQD26). |
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| Study on luminescence properties and energy transfer of CaSrSiO4∶Sm3+, Eu3+ red phosphors |
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LIU Yue1,FAN Haoshuang1,MENG Xianguo2,XU Yingchao1,3,HONG Junhuang1,LIN Zhenpeng1,LI Haolai1
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(1.School of Optoelectronics and Communications Engineering,Xiamen University of Technology,Xiamen 361024, China; 2. College of Science, Beibu Gulf University, Qinzhou 535011, China; 3.Fujian Key Laboratory of Optoelectronic Technology and Devices, Xiamen University of Technology, Xiamen 361024, China)
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| Abstract: |
| A series of CaSrSiO4∶Sm3+,Eu3+ phosphors were prepared by high-temperature solid-state method, and their phase structures, luminescence properties, thermal stability and energy transfer phenomenon were studied. Phase analysis showed that both single and co-doped samples with Sm3+ and Eu3+ did not change the crystal structure of the matrix and formed a single pure phase. At the excitation wavelength of 405 nm, the highest emission peak of CaSrSiO4∶Sm3+,Eu3+ is located at 597 nm, resulting from the ground state level 4G5/2 to 6H7/2 transition. The fluorescence spectra of co-doped phosphor CaSrSiO4∶Sm3+,Eu3+indicated that the energy transfer from Sm3+ to Eu3+, achieved via electric dipole-dipole interaction, with an efficiency of 40.6%. The CIE chromaticity coordinates of CaSrSiO4∶Sm3+,Eu3+ shift from orange-red spectral region to pure red spectral region. In addition, the luminescence intensity of CaSrSiO4∶Sm3+,Eu3+at 423 K remain 94.85% of that at room temperature, showing excellent thermal stability. Finally, when packaged with a 395 nm UV LED chip, the packaged device can emit white light with high color rendering index and low color temperature. The results showed that CaSrSiO4∶Sm3+,Eu3+ phosphors show promise as candidate materials for white LED red phosphors. |
| Key words: CaSrSiO4∶Sm3+,Eu3+ red phosphor phase structure luminescence properties energy transfer energy level transition white LED 收稿日期: 2023-09-27.网络出版日期: 2023-11-29. 基金项目: |
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