Fig. 3: Multicolor PersL in the NaYF4:Ln3+@NaYF4 nanoparticles (Ln = Tb, Er, Dy, Ho, Tb@Eu and Nd) | Light: Science & Applications

Fig. 3: Multicolor PersL in the NaYF4:Ln3+@NaYF4 nanoparticles (Ln = Tb, Er, Dy, Ho, Tb@Eu and Nd)

From: X-ray-charged bright persistent luminescence in NaYF4:Ln3+@NaYF4 nanoparticles for multidimensional optical information storage

Fig. 3

a PersL spectra of thenanoparticles after X-ray irradiation. b PersL images of the NaYF4:Tb3+@NaYF4 (Tb@Y), NaYF4:Dy3+@NaYF4 (Dy@Y) and NaYF4:Ho3+@NaYF4 (Ho@Y) nanoparticles dispersed in cyclohexane. c CIE chromaticity diagram of PersL in NaYF4:Ln3+@NaYF4 nanoparticles. d Temperature–wavelength-intensityTL glow graph (3-D plot) for NaYF4:Tb3+@NaYF4. e–f PersL decay curves in NaYF4:Ln3+@NaYF4 nanoparticles at RT. The nanoparticles wereirradiated by the X-ray source for 10 min before PersL recording. The noiselevel was also given in the curves for comparison. The PersL decay curves ofNaYF4:Ln3+@NaYF4 (Ln = Tb, Er, Dy, Hoand Tb@Eu) monitored in the range of 400–750 nm. The PersL decay curves of NaYF4:Nd3+@NaYF4 monitored in the range of 400–1000 nm

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