• 中国期刊全文数据库
  • 中国学术期刊综合评价数据库
  • 中国科技论文与引文数据库
  • 中国核心期刊(遴选)数据库
张法碧, 何婷波, 周娟, 等. Eu3+掺杂β-Ga2O3的水热法制备及其光学性能[J]. 桂林电子科技大学学报, 2023, 43(6): 446-452. DOI: 10.3969/1673-808X.2021340
引用本文: 张法碧, 何婷波, 周娟, 等. Eu3+掺杂β-Ga2O3的水热法制备及其光学性能[J]. 桂林电子科技大学学报, 2023, 43(6): 446-452. DOI: 10.3969/1673-808X.2021340
ZHANG Fabi, HE Tingbo, ZHOU Juan, et al. Eu3+ doped β-Ga2O3 synthesized via hydrothermal method and luminescence properties[J]. Journal of Guilin University of Electronic Technology, 2023, 43(6): 446-452. DOI: 10.3969/1673-808X.2021340
Citation: ZHANG Fabi, HE Tingbo, ZHOU Juan, et al. Eu3+ doped β-Ga2O3 synthesized via hydrothermal method and luminescence properties[J]. Journal of Guilin University of Electronic Technology, 2023, 43(6): 446-452. DOI: 10.3969/1673-808X.2021340

Eu3+掺杂β-Ga2O3的水热法制备及其光学性能

Eu3+ doped β-Ga2O3 synthesized via hydrothermal method and luminescence properties

  • 摘要: 采用高温水热法合成稀土Eu3+掺杂β-Ga2O3荧光粉,研究不同热退火温度对其发光性能的影响。利用X射线衍射仪对样品的物质结构信息进行表征,样品衍射峰发生小角度偏移,表明Eu3+进入β-Ga2O3晶格中。通过拉曼光谱仪对样品的物质结构和组态进行检测,样品的拉曼峰与β-Ga2O3结构的拉曼峰位置一致,并在800 ℃达到最大峰值,说明此温度下样品的结晶度最好。使用扫描电子显微镜对样品的表面形貌进行观测,不同热退火温度下荧光粉颗粒分布均匀,表明热退火处理后样品的结晶质量良好。在395 nm波长激发光谱作用下,可以看到2种不同的发射光谱,591 nm处为Eu3+(5D07F1)跃迁产生的橙光发射,612 nm处为Eu3+(5D07F2)跃迁产生的红光发射,并以发射红光为主。随着退火温度的不断升高,样品的发射光谱强度先增大后减小,并在800 ℃下达到最大值,表明热退火温度为800 ℃时荧光粉样品的发光效果最好。水热法合成工艺简单且成本低廉,合成的样品纯度高。高温热退火处理可通过应力作用减少材料中的缺陷,提高结晶度,从而提升荧光粉的发光性能。

     

    Abstract: Eu3+ doped β-Ga2O3 phosphor was synthesized via hydrothermal method. The effects of thermal annealing temperature on the optical properties of Eu3+ doped β-Ga2O3 phosphor were studied. X-ray diffraction method was used to identify the phase and crystal growth orientation of the phosphor sample. The results show that the Eu3+ introduce into β-Ga2O3 lattice with the diffraction peak position of the sample shifts to a different angle. Raman spectrometer was used to detect the material structure and configuration of the sample. The Raman peak of the sample is consistent with the Raman peak of β-Ga2O3 structure, and reach at the maximum peak at 800 ℃, indicating that the crystallinity of the sample is the best temperature. Surface morphology of the phosphor sample were measured and observed using a scanning electron microscope. The results show that the properties of high uniformity and good crystallinity in different thermal annealing temperature. Under 395 nm excitation, it can be seen that 591 nm orange light emission peak attributes to Eu3+(5D07F1) and 612 nm red light emission peak produced by the Eu3+(5D07F2) transition, mainly red light emission peak. With the increase of thermal annealing temperature, the phosphor sample luminescence intensity increased first and then decreased, indicating that the phosphor sample have the higher luminescence intensity at 800 ℃. The results of powders were synthesized by hydrothermal method showed that the properties of high purity. The thermal annealing process is simple and low cost, which can effectively deal with the crystallinity of the sample. By reducing the defects in the material through the stress action, the crystallinity is higher and the luminescent properties of phosphors are improved.

     

/

返回文章
返回