A stepwise method for the preparation of red∕green luminescent thin films based on zinc oxide and lanthanide-organic complexes is described. The synthesis of highly porous ZnO matrices is performed by electrodeposition with help of eosin Y molecules. The matrix is loaded with in situ assembled :dcbpy luminescent complexes (with Ln being Eu or Tb). The ligand is anchored to ZnO by its carboxylic acid groups. The film excitation and emission characteristics show UV absorption by the ligand at and by ZnO below with an efficient energy transfer to for light emission.
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Pauporté et al. (2006) studied this question.
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