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The nature of visible photoluminescence (PL) at room temperature in amorphous (RE)NiO3 (RE=La, Y, Er, Ho, Nd and La1-xYx) is discussed. Powders of this system were prepared by the polymeric precursor technique. The presence of broad PL band emission spectra at room temperature indicated increasing structural order with addition of rare earth elements. É discutido o fenômeno da fotoluminescência à temperatura ambiente observada em compostos amorfos do tipo (TR)NiO3 (TR = La, Y, Er, Ho, Nd e La1-xYx). Pós com essas composições foram preparados a partir de precursores poliméricos. A presença de uma banda de emissão fotoluminescente larga à temperatura ambiente está associada ao aumento da ordenação estrutural com a adição de íons de terras raras ao sistema

Room temperature photoluminescence of (RE)NiO3 (RE=La, Y, Er, Ho, Nd and La1-xYx)