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High-resolution laser induced excitation spectroscopy and decay dynamics of YNbO4:Er3

[Display omitted] The rare earth materials have attracted intensive attention due to their strong luminescent characteristic. However, the split fine Stark levels are difficult to be determined. Here we report a room-temperature detection for Stark levels of YNbO4: Er3+ using established laser-induc...

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Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2022-02, Vol.267, p.120573, Article 120573
Main Authors: Zhang, Feng, Zhao, Feng-Jiao, Huang, Kai, Li, Xiang-Ping, Han, Dong-Xue, Wang, Xin, Yin, Hong-Ming
Format: Article
Language:English
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Summary:[Display omitted] The rare earth materials have attracted intensive attention due to their strong luminescent characteristic. However, the split fine Stark levels are difficult to be determined. Here we report a room-temperature detection for Stark levels of YNbO4: Er3+ using established laser-induced spectroscopy system with dye laser of superhigh resolution of wavelength at 0.005 nm. From excitation spectra, six split Stark levels of 4G11/2 (Er3+) were directly detected. Moreover, nonradiative relaxations of 4G9/2→4G11/2 and 4G11/2→2H11/2/ 4S3/2 have been observed with weighed lifetimes of 0.70 μs and 6.15 μs, and characteristic green emission of Er3+ (@555 nm) yields lifetime of 31.78 μs.
ISSN:1386-1425
DOI:10.1016/j.saa.2021.120573