Zhang Yuhong, Zhu Hongqun, Yang Xuezhong, Wang Haoran, Wang Qiang, Sun Chunhui, Tian Haozhou, Liu Hang
School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China.
School of Electrical and Computer Engineering, Jilin Jianzhu University, Changchun 130118, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2025 Feb 5;326:125199. doi: 10.1016/j.saa.2024.125199. Epub 2024 Sep 23.
Here, the SrLaNbO: Yb/Nd/Ho phosphors are prepared through solid-state route. The upconversion (UC)/downshifting (DS) luminescence and temperature performances of all samples are investigated in detail. Under 808 nm excitation, the infrared emission band (∼2000 nm) of Ho ions is obtained. Especially, the energy transfer process of Nd → Yb → Ho has increased the emission intensity of ∼2000 nm. Moreover, the infrared emission band presents thermal enhancement. Under 980 nm excitation, the UC emission band 500-960 nm is investigated. The green and red light of Ho ion, near infrared light of Nd ions are achieved. In addition, the possible luminescence mechanism of SrLaNbO: Yb/Nd/Ho phosphor is discussed. At last, the optical temperature sensing characteristics of the phosphor are studied according to the luminescence intensity ratio (LIR) technology. The maximum relative sensitivity of SrLaNbO: Yb/Nd/Ho reaches 5.476 % K at 293 K. These results prove that the SrLaNbO: Yb/Nd/Ho phosphor presents the luminescence in infrared and visible range. The SrLaNbO:Yb/Nd/Ho phosphor also can be applied to design optical temperature sensor.
在此，通过固态路线制备了SrLaNbO:Yb/Nd/Ho荧光粉。详细研究了所有样品的上转换（UC）/下转换（DS）发光和温度性能。在808nm激发下，获得了Ho离子的红外发射带（2000nm）。特别是，Nd→Yb→Ho的能量转移过程提高了2000nm处的发射强度。此外，红外发射带呈现出热增强。在980nm激发下，研究了500-960nm的UC发射带。获得了Ho离子的绿光和红光、Nd离子的近红外光。此外，还讨论了SrLaNbO:Yb/Nd/Ho荧光粉可能的发光机制。最后，根据发光强度比（LIR）技术研究了该荧光粉的光学温度传感特性。SrLaNbO:Yb/Nd/Ho在293K时的最大相对灵敏度达到5.476%K。这些结果证明，SrLaNbO:Yb/Nd/Ho荧光粉在红外和可见光范围内均有发光。SrLaNbO:Yb/Nd/Ho荧光粉也可用于设计光学温度传感器。
