Abstract:A series of bifunctional NaYF 4 microcrystals doped with Yb 3+ /Er 3+ have been successfully synthesized through a facile hydrothermal method. They have been characterized by XRD, SEM, photoluminescence spectra and the magnetization. These microcrystals can emit ∼540 nm green light from Er 3+ -4 f n electronic transition 4 S 3/2 -4 I 15/2 , ∼657 nm red light from Er 3+ -4 f n electronic transition 4 F 9/2 -4 I 15/2 , and ∼407 nm violet light from Er 3+ -4 f n electronic transition 2 H 4 9/2 I 15/2 , under the … Show more
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