Preparation of LaPO4:Ce,Tb phosphor with different morphologies and their fluorescence properties

Preparation of LaPO 4 :Ce 3+ ,Tb 3+ nanophosphors by mixed co-precipitation process and their photoluminescence properties

“…There was a rapid increase of particle size between 900 and 1000 1C, the particle size increased from about 90 nm to 200 nm, the La 0.4 Ce 0.4 Tb 0.2 PO 4 phosphor calcined at 900 1C had a spherical morphology. The use of spherical particles can increase packing densities and brightness than irregularly shaped particles [20,21]. Aggregation between particles occurred in the phosphors calcined at 1000 and 1100 1C, the particles had a non-spherical structure, and this is detrimental to the luminescent property of the phosphor.…”

“…Nanosized phosphors can provide the equivalent coverage density with lower powder weights than that of larger sized particles and are beneficial to the improvement of display resolution of the devices [20,21]. n Several synthesis methods have been reported for the preparation of phosphate phosphor materials, such as coprecipitation [6,7,20], combustion [22], the sol-gel process [23], hydrothermal [24], and spray pyrolysis [25]. Coprecipitation routes may provide several adjustable synthetic parameters such as reaction temperature, aging time, pH value, and solution concentration.…”

Near infrared fluorescence and energy transfer in Ce/Nd Co-doped CaxSr1−xS

“…Besides, Ce 3 + is also often used as a sensitizer for other ions such as Sm 3 + , Tb 3 + , etc. [10,11].…”

UV–VUV-excited photoluminescence of Tm3+ substituted β-rhenanite as a blue-emitting phosphor

“…They considered the simplicity of the 4f level structure of Tm 3 + beneficial for applications, owing to the prohibition of energy dissipation between many different relaxation channels, whereas most rare-earth (RE) ions have significantly more 4f levels [9]. Apropos of the host, orthophosphates have been attracted considerable interest in recent years because of their long lifetime, high energy efficiency, and great reliability [10][11][12]. Moreover, the isolated PO 4 3 À group of orthophosphates, the absorption energy of which was 7-10 eV, may efficiently absorb the energy of VUV photons [13][14][15].…”