TITLE:
Quenching Photoluminescence of Eu(III) by Cu(II) in ZnO:Eu3++Cu2+ Compounds by Solution Combustion Method
AUTHORS:
S. López-Romero, M. J. Quiroz Jiménez, M. García-Hipólito
KEYWORDS:
ZnO, Co-Doped Cu2++Eu3+, Quenching, Photoluminescence, Solution, Combustion
JOURNAL NAME:
World Journal of Condensed Matter Physics,
Vol.6 No.3,
August
31,
2016
ABSTRACT: In this study Cu2++Eu3+ co-doped ZnO(ZnO/Cu2++Eu3+) solid solution powders were synthesized by solution combustion method using as oxidant agent zinc nitrate hexahydrate and as fuel urea; the Cu2+ concentrations were 0, 1, 2, 3, 10, and 20 %Wt; the Eu3+ ion concentration was fixed in 3%Wt. The samples after were annealed at 900°C by 20 h in air. The structural results showed the largely presence of a wurtzite solid solution of Cu2++Eu3+doped ZnO, at high Cu2+ doping CuO and Eu2CuO4 phases are also present. Morphological properties were analyzed using scanning electron microscopy (SEM) technique. However it is important to remark that the Cu2+ ions suppress the Eu3+ ion photoluminescence (PL) by means of an overlap mechanism between Cu2+ absorption band and Eu3+emission band (e.g. 5D0→7F2) of the Eu3+ emission spectra.