Zhao Yanxia, Zheng Zhibo, Li Zhongliang, Shi Zhan, Song Yanhua, Zou Bo, Zou Haifeng
Department of Chemical Engineering and Applied Chemistry, College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, P.R. China.
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P.R. China.
Inorg Chem. 2024 Mar 4;63(9):4288-4298. doi: 10.1021/acs.inorgchem.3c04454. Epub 2024 Feb 18.
BaLu(BO)(BLB):Ce,Tb/Mn phosphors were designed to explore effective and multifunctional applications. Under the excitation of near-ultraviolet (n-UV) light, the BLB:Ce phosphor showed broad-band blue emission. After codoping with Mn ions, the single-phase white light phosphor is achieved through the energy transfer (ET) between Ce and Mn. In addition, thermal stability is significantly enhanced by the addition of Tb (BLB:0.02Ce,0.20Tb) compared to that codoped with Mn (BLB:0.02Ce,0.10Mn). The light-emitting diode (LED) device with warm white light emission is fabricated with UV-chip-coated BLB:0.02Ce,0.05Tb and SrSiN:Eu phosphors, showing a good potential application value for LEDs. Additionally, the spectral properties of borate-based phosphors (BLB:0.02Ce) under high pressure were studied for the first time. Surprisingly, the change of pressure enabled the emission peak of BLB:0.02Ce to be tuned from 485 to 552 nm, and dλ/d is 3.51 nm GPa. The color changes from blue to yellow with an increase of pressure. Compared with the reported data, the pressure-sensing sensitivity based on the central peak shift in this work is the highest in all Ce single-doped samples. In addition, the emitting color and intensity were gradually regained after decompression. The intensity can reach 80% of the initial intensity. All data demonstrate that the BLB:0.02Ce phosphor has the potential to be utilized as an optical pressure sensor due to the high-pressure sensitivity and visible color tuning.
设计了BaLu(BO)(BLB):Ce,Tb/Mn荧光粉以探索其有效和多功能应用。在近紫外(n-UV)光激发下，BLB:Ce荧光粉呈现宽带蓝光发射。与Mn离子共掺杂后，通过Ce和Mn之间的能量转移(ET)实现了单相白光荧光粉。此外，与Mn共掺杂的(BLB:0.02Ce,0.10Mn)相比，添加Tb (BLB:0.02Ce,0.20Tb)后热稳定性显著提高。采用涂覆有UV芯片的BLB:0.02Ce,0.05Tb和SrSiN:Eu荧光粉制备了具有暖白色发光的发光二极管(LED)器件，显示出在LED方面具有良好的潜在应用价值。此外，首次研究了硼酸盐基荧光粉(BLB:0.02Ce)在高压下的光谱特性。令人惊讶的是，压力变化使BLB:0.02Ce的发射峰从485 nm调至552 nm，dλ/d为3.51 nm/GPa。随着压力增加，颜色从蓝色变为黄色。与报道的数据相比，基于本工作中中心峰位移的压力传感灵敏度在所有Ce单掺杂样品中是最高的。此外，减压后发光颜色和强度逐渐恢复。强度可达到初始强度的80%。所有数据表明，由于高压敏感性和可见颜色调谐，BLB:0.02Ce荧光粉有潜力用作光学压力传感器。
