Crystallization-Dependent Luminescence Properties of Ce:LuPO₄

Abstract

The luminescence properties of Ce:LuPO4 depend on both the Ce(3+) center and the host lattice. In this article, we studied the dependence of the luminescence properties of Ce:LuPO4 on both the doping concentration of Ce(3+) and the size and morphology of the LuPO4 matrix at micro- and nanosize regimes. The crystalline behavior of Ce:LuPO4, including its size and shape, was investigated via precursor transformation crystallization. On the basis of this crystallization approach, Ce:LuPO4 hollow nanospheres, nanorods, and regular tetrahedrons were obtained. For micro- and nanostructured Ce:LuPO4, the surface-induced chemical bonding architecture can be effectively varied by controlling the size of the crystalline material and its geometry. Our experimental observations demonstrate that one-dimensional Ce:LuPO4 nanorods doped with 0.1 mol % Ce(3+) possess the best performance among the as-prepared samples. The significant anisotropy of Ce:LuPO4 nanorods can result in a larger specific surface area and enhanced luminescence properties. Moreover, the improved luminescence property of Ce:LuPO4 nanostructures can also be optimized by increasing the preferential anisotropic chemical bonding architecture to regulate the 5d level of Ce(3+). Our work also shows that the photoluminescence emission intensity of Ce:LuPO4 nanorods is increased as the surface area normal to their axial direction increases. From the standpoint of crystallization, the luminescence properties of Ce(3+) in nano- and microsize matrixes can be well-optimized by controlling the crystalline behavior of the host lattice under proper synthesis conditions.

Crystal Growth, Luminescence and Scintillation Characterizations of Cs2KLaCl6:Ce and Cs2KCeCl6

“…The stokes shifts of the 2 F 5/2 to t 2g (1) transition of Ce 3+ ions in CKLC and CKCC crystals were calculated to be 1063 and 1527 cm −1 , respectively. Note that both materials show some overlap of emission and excitation bands, so that Ce 3+ emission may be reabsorbed by another Ce 3+ center, which is similar to previous reports [19].…”

“…5 of 8 bands, so that Ce 3+ emission may be reabsorbed by another Ce 3+ center, which is similar to previous reports [19]. The photoluminescence decay curve of CKLC crystal using an excitation wavelength of 342 nm and a monitoring wavelength of 369 nm is displayed in Figure 5a.…”

Room-temperature synthesis and photoluminescence of hexagonal CePO4 nanorods

“…Rare earth phosphate nanomaterials have been extensively reported due to their high-performance photoluminescence [1,2]. Especially, pure and rare-earth ion doped CePO 4 nanomaterials have received a lot of research interest [3][4][5][6].…”

Synthesis and luminescent properties of uniform monodisperse LuPO 4 :Eu 3+ /Tb 3+ hollow microspheres

“…Recently, many researches have reported on the synthesis of YPO 4 [27], LaPO 4 [28], CePO 4 [29] and GdPO 4 [14] micro/nanomaterials. Compared with a great deal of work on other orthophosphate materials, the study on the synthesis of LuPO 4 material has rarely been reported [30–34]. LuPO 4 is an excellent candidate for lanthanide ion substitution because of its favourable physical properties, such as high chemical stability, high melting point, high quantum yield and low toxicity.…”

“…LuPO 4 is an excellent candidate for lanthanide ion substitution because of its favourable physical properties, such as high chemical stability, high melting point, high quantum yield and low toxicity. Up to now, some typical morphologies of LuPO 4 , such as zero-dimensional nanoparticles [31], microspheres [32], one-dimensional nanorods [30] and three-dimensional microtetrahedron [30], have been successfully synthesized.…”