LiZnGeO:Ln（Ln = Er、Tm、Ho）的近红外发光

Bednarska-Adam Nikola, Kuwik Marta, Goryczka Tomasz, Ivanov Vitalii, Dresner Józef, Pisarski Wojciech A, Pisarska Joanna

Institute of Chemistry, University of Silesia 40-007 Katowice Poland

Institute of Materials Engineering, University of Silesia 41-500 Chorzów Poland.

RSC Adv. 2025 Mar 21;15(11):8784-8794. doi: 10.1039/d4ra07999j. eCollection 2025 Mar 17.

In this work, ceramic compounds LiZnGeO:Ln (Ln = Er, Tm, Ho), belonging to the family of germanate olivines, were studied. The structural properties were examined using X-ray diffraction, scanning electron microscopy, IR and Raman spectroscopy. Near-infrared luminescence spectra showed that the bands located in the spectral range of 1400-2100 nm were due to the electronic transitions of lanthanide ions: I → I (Er), H → F and F → H (Tm), and I → I (Ho). Decay curve analysis indicated that the near-infrared luminescence from the excited states of lanthanide ions in LiZnGeO was relatively long-lived. The results suggest that germanate olivines LiZnGeO:Ln (Ln = Er, Tm, Ho) are promising inorganic phosphors and can be successfully used as ceramic sources emitting near-infrared radiation.

在这项工作中，对属于锗酸橄榄石家族的陶瓷化合物LiZnGeO:Ln（Ln = Er、Tm、Ho）进行了研究。使用X射线衍射、扫描电子显微镜、红外和拉曼光谱对其结构性质进行了研究。近红外发光光谱表明，位于1400 - 2100 nm光谱范围内的谱带归因于镧系离子的电子跃迁：I → I（Er）、H → F和F → H（Tm）以及I → I（Ho）。衰减曲线分析表明，LiZnGeO中镧系离子激发态的近红外发光寿命相对较长。结果表明，锗酸橄榄石LiZnGeO:Ln（Ln = Er、Tm、Ho）是有前景的无机磷光体，可成功用作发射近红外辐射的陶瓷源。