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It has been experimentally confirmed that the addition of very small amount, tantamount to ∼1mol%, of the group III elements (Ga or In) in combination with alkali halides (CsBr or RbBr) into chalcogenide Ge–As–S glass significantly improves the emission properties of Dy 3+ dopant. Preferential location of Br in the first coordination shell of Dy 3+ , which occurs spontaneously during...
In this paper, a series of Eu(III)complexes with a novel triphenylamine-derived beta-diketone ligand are synthesized. Systematical research reveals that these Eu(III) complexes take an occasional antenna mechanism by transferring energy between singlet state of ligand and central Eu(III), which leads to much shortened excited state lifetimes of the corresponding Eu(III) complexes.
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