Optical properties of Eu2+-activated orthosilicates and orthophosphates

The significance of phosphate source in the preparation of functional luminescent phosphate materials

“…LiNO 3 , Ca(NO 3 ) 2 ·4H 2 O, and Eu(NO 3 ) 3 were dissolved in a citric acid aqueous solution. The mixture was first heated at 353 K for 2 h to allow chelation, and then, PEG-P and propylene glycol were added into the resulting solution.…”

“…Phosphate-based compounds are recognized as an important functional material group in various application fields such as biotechnology, electric engineering, and energy technology, 1) 3) owing to their diverse functionalities. Various kinds of approaches can be employed in the synthesis of inorganic phosphate compounds.…”

A Promising Orange-Red Nanocrystalline Potassium Lanthanum Orthophosphate for White Light-Emitting Diodes

“…The rare earth doped phosphates are an important family of luminescent materials for solid state lighting applications as they possess excellent properties such as large band gap, moderate phonon energy, high thermal and chemical stability, exceptional optical damage threshold, and high absorption of PO 4 3− in the VUV region [5][6][7]. Among the phosphates families, orthophosphate is considered to be an excellent host material to accommodate large amount of dopants due to its large band gap.…”

Nanorods of white light emitting Sr2SiO4:Eu2+: microemulsion-based synthesis, EPR, photoluminescence, and thermoluminescence studies

“…It has two crystalline phases, monoclinic (b) and orthorhombic (a), with a transformation temperature of about 85 C. Their crystal structures are the same as those of b-Ca 2 SiO 4 and b-K 2 SO 4 , respectively. [1] Orthorhombic Sr 2 SiO 4 :Eu 2þ is an important yellow phosphor candidate that can be used to develop white light-emitting diodes (w-LEDs) in combination with a GaN chip. [2] Various activators and co-activators were added to develop the afterglow luminescence of Sr 2 SiO 4 phosphors.…”