Zhu Dong, Wang Chunfeng, Wang Xiaohuai, Han Shun, Zeng Yuxiang, Fang Ming, Liu Wenjun, Zhu Deliang, Cao Peijiang, Lu Youming
College of Materials Science and Engineering, Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen University, Shenzhen 518060, China.
College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
Molecules. 2025 Feb 27;30(5):1085. doi: 10.3390/molecules30051085.
The co-precipitation method was successfully used to synthesize Ba(YGdEu)O (0.01 ≤ x ≤ 0.09) phosphors with heavy Gd doping, resulting in significantly enhanced thermal stability and luminescence performance. Structural analyses confirm that Gd and Eu ions substitute Y in the lattice, causing lattice expansion and improving crystal asymmetry, which enhances Eu emission. The incorporation of Gd creates efficient energy transfer pathways to Eu while suppressing non-radiative relaxation, leading to stable fluorescence lifetimes even at elevated temperatures. With a thermal activation energy of ~0.3051 eV, the Ba(YGdEu)O phosphor exhibits superior resistance to thermal quenching compared to Ba(YEu)O and many conventional red phosphors. Furthermore, the reduced color temperature and stable emission spectra across a wide temperature range highlight its potential for advanced lighting and display technologies in high-temperature environments.
共沉淀法成功用于合成重掺杂Gd的Ba(YGdEu)O（0.01≤x≤0.09）荧光粉，显著提高了热稳定性和发光性能。结构分析证实，Gd和Eu离子在晶格中替代Y，导致晶格膨胀并改善晶体不对称性，从而增强Eu发射。Gd的掺入形成了到Eu的有效能量转移途径，同时抑制了非辐射弛豫，即使在高温下也能实现稳定的荧光寿命。Ba(YGdEu)O荧光粉的热激活能约为0.3051 eV，与Ba(YEu)O和许多传统红色荧光粉相比，表现出优异的抗热猝灭性能。此外，较低的色温以及在宽温度范围内稳定的发射光谱突出了其在高温环境下先进照明和显示技术中的应用潜力。
