Application of rare-earth complexes for photovoltaic precursors

Synthesis and characterization of Er3+ doped CaF2 nanoparticles

“…With the increasing of Er 3+ doping concentration, the grain size and crystallinity decreased, however, the lattice constants increased significantly as a consequence of the formation of interstitial fluorine ions. The annealing treatment at 400 • C facilitated the grain growth and eliminated the impurities such as NO 3 − and H 2 O molecules, resulting in the increase in intensity of the fluorescence spectrum. The fluorescence intensity of Er 3+ :CaF 2 nanoparticles firstly increased with the dopant concentration, then reached a maximum at approximately 0.4 mol%, and followed with decrease with the increase in concentration of Er 3+ ions because of concentration quenching.…”

“…5 and shows strong absorption bands at 3400 cm −1 and 1630 cm −1 characteristic of anti-symmetric and symmetric stretches, as well as bending modes of the H 2 O molecule, respectively revealing the presence of water (or hydroxyl groups) in the as-obtained powder. Furthermore, a band at 1385 cm −1 that can be attributed to the asymmetric stretching vibration of NO 3 − is clearly seen in the FTIR spectrum, as nitrate salts were used in the synthesis. Besides, as can be seen in Fig.…”

“…These properties make this kind of nanometer-sized materials promising in many fields. For example, luminescent nanoparticles based on rare earth (RE) ions have potential applications for lamps and display [1], the optical telecommunications [2], solid state laser, new optoelectronic devices [3] and precursors for transparent ceramic processing, etc.…”

Radiological Impacts and Regulation of Rare Earth Elements in Non-Nuclear Energy Production

“…The complexes that several REEs form (especially Eu and Ce) absorb certain wavelengths particularly effectively [19,20]. However, no dominant solar cell design, or range of designs, has emerged globally.…”

Silica‐Coated CaF2:Eu3+ Nanoparticles Functionalized with Oxalic Acid for Bio‐conjugation to BSA Proteins

“…5 Generally these devices exploit the improved optoelectronic properties of nanoparticles. 6 Recently, nanocrystals have become another class of materials that were used for construction of biosensor.…”