Tuning photoluminescence in layered Pr doped Bi4Ti3O12 nanosheets via molten salt process

Hang Zhang, Yujun Liang, Yingli Zhu, Shiqi Liu, Kai Li, Jian Yang, Wen Lei

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11 Citations (Scopus)


Novel single-phased and emission-tunable layered Bi4Ti3O12:Pr3+ nanosheets have been successfully synthesized via molten salt method. The as-prepared samples were characterized by X-ray diffraction and scanning electron microscopy to investigate their crystalline phases and morphologies. Furthermore, we explored the photoluminescence properties of the Bi4Ti3O12:Pr3+ phosphors, while the cross-relaxation processes between 1D2, 3P0 emitting states and the Pr3+–Ti4+ intervalence charge transfer state, color tuning and thermally stability were discussed in detail. Besides, the emission hue of Bi4Ti3O12:Pr3+ could be adjusted from white-light (0.3059, 0.2731) to yellow (0.5167, 0.4792) by tuning the excitation wavelength, in which the ratio of 3P03H4 and 1D23H4 was changed. In addition, the increases in temperatures led to the cooperative effects of thermal-quenching behavior and the cross-relaxation processes, thus resulting in the significant decrease of 3P03H4 emission in comparison to the 1D23H4 emission. The results suggested that the Bi4Ti3O12:Pr3+ is an effective color-tuning phosphor.

Original languageEnglish
Pages (from-to)1030-1040
Number of pages11
JournalJournal of Alloys and Compounds
Publication statusPublished - 30 Oct 2018


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