Controlled Synthesis of Terbium Orthophosphate Spindle‐Like Hierarchical Nanostructures with Improved Photoluminescence

Abstract

Nanostructured terbium orthophosphate (TbPO 4 ·H 2 O) nanostructures with enhanced photoluminescence were prepared through a controlled, simple, and template-free hydrothermal route. The structures and micromorphologies of the assynthesized TbPO 4 ·H 2 O were investigated by X-ray powder diffraction (XRD), thermogravimetric analysis, differential scanning calorimetry (TG-DSC), field-emission scanning electronic microscopy (FE-SEM), and X-ray photoelectron spectroscopy (XPS). The results showed that the TbPO 4 ·H 2 O spindle-like hierarchical nanostructures are composed of ordered nanorods of 80-90 nm in diameter and lengths of up

Luminescence Properties of Redispersible Tb3+‐Doped GdPO4 Nanoparticles Prepared by an Ethylene Glycol Route

“…Many extensive works on LnPO 4 doped with activators have been reported in an attempt to understand particle size and shape dependence on chemical and physical properties. [15][16][17][18][19][20] However, it is desirable to prepare nanoparticles of such phosphors at relatively low temperatures so that significant reduction in both the particle aggregation and segregation of lanthanide ions (e.g., Ln 2 O 3 , where Ln = Eu, Tb, Dy activators) can be achieved. During low-temperature synthesis, the organic ligands can stabilize the nanoparticles at the synthesis temperature, thereby preparing them for incorporation into polymer-/sol-gel-based luminescent and display devices.…”

Controlled synthesis of tetragonal terbium orthophosphate nanostructures through a solvothermal route

“…7 F J (J = 6, 5, 4, 3) transitions of Tb 3? for tetragonal phase were not observed for the hexagonal phase [21]. In summary, the tetragonal phase TbPO 4 was solvothermally controlled synthesized using glycol as solvent.…”

“…In our recent work on the synthesis of the hexagonal TbPO 4 ÁH 2 O nanorods, NH 4 H 2 PO 4 precipitation was found to be formed at an early stage of the reaction, which could affect the formation rapidity of the products [21]. Apparently, NH 4 H 2 PO 4 and related compounds may play as reactant and morphology controller in the synthesis system.…”

“…nanocrystal with narrow size dispersion and good optical properties have been obtained by using a high-boiling-solvent technique [17,18], by using a microwave-assisted synthesis method with some ionic liquids as the reaction media luminescent LaPO 4 :Ce,Tb nanoparticles with high quantum yield were recently prepared [19]. Additionally, the hexagonal TbPO 4 ÁH 2 O microstructure with mixed spherical and rod-like morphologies was prepared by crystallization from boiling phosphoric acid solution and a low-temperature hydrothermal system [20,21]. Obviously, research about lanthanide phosphates LnPO 4 or lanthanide-doped LnPO 4 is mainly focused on the hexagonal and monoclinic phase LnPO 4 1D nanowires/rods or nanoparticles so far.…”

A facile hydrothermal route to flower-like single crystalline EuPO4·H2O

“…It was observed that the calculated relative intensity ratio of the flower-like structures is larger than that of the other two morphologies. The results revealed that the self-assembly of the microprism building blocks into microstructures is of great significance to enhance the photoluminescence properties [18], which indicated that flower-like EuPO 4 Á H 2 O has a potential application in photoluminescence field as a highly efficient red phosphor.…”