Facile Preparation of YVO4: RE Films and the Investigation of Photoluminescence

作者：Chen, Taihui; Zhang, He; Luo, Zhihong; Liang, Jun^*; Wu, Xiaoli^*

来源：Coatings, 2022, 12(4): 461.

DOI：10.3390/coatings12040461

• YVO4 film
• layered yttrium hydroxide film
• sacrificial precursor
• anion exchange
• photoluminescence

Facile preparation of YVO4 films was hydrothermally achieved within 1 h by using layered yttrium hydroxide (Y-2(OH)(5)NO3 center dot nH(2)O) films as the sacrificial precursor in the presence of excess NaVO3 at pH similar to 8, without subsequent heat treatment. Detailed structures and optical properties of the products were obtained by using a combination of XRD, FT-IR, FE-SEM, HR-TEM, and PLE/PL techniques. The phase and morphological evolution from Y-2(OH)(5)NO3 center dot nH(2)O to YVO4 was unveiled by varying the reaction time. Photoluminescence spectra showed that the Eu3+ doped YVO4 films exhibited the characteristic emission of Eu3+, with the transition D-5(0)-F-7(2) (614 nm, red) being the dominant; while Dy3+ activator doped YVO4 films exhibited the characteristic emission of Dy3+, with the transition F-4(9/2)-H-6(13/2) (575 nm, green) being the most dominant.

• 单位
  桂林理工大学