TY - JOUR
T1 - Influence of metal ion concentration in the glycol mediated synthesis of Gd2O3:Eu3+ nanophosphor
AU - Abhilash Kumar, R. G.
AU - Hata, Satoshi
AU - Ikeda, Ken Ichi
AU - Gopchandran, K. G.
N1 - Funding Information:
R.G. Abhilash Kumar acknowledges University Grants Commission (UGC), India for the award of teacher fellowship under the faculty development programme.
PY - 2014/3
Y1 - 2014/3
N2 - The solvothermal synthesis of highly luminescent and homogeneous Gd 2O3:Eu3+ nanophosphor using diethylene glycol as medium, followed by controlled combustion with citric acid as fuel is reported. The influence of concentrations of carboxylic acid and metal cations on the structure, morphology and luminescence properties are investigated in detail. The microscopic investigations indicate the nanocrystalline nature and the strong influence of cation concentration on the size, shape and agglomeration of the particles. It is found that increase in concentration of metal cations lead to the reduction in agglomeration of nanophosphors. The large value of intensity parameter Ω2, suggested that Eu 3+ ions reside in a more asymmetric environment, resulted in intense emission due to 5D0-7F2 electric dipole transition. Emission decay analysis of the samples exhibited one exponential nature. The samples prepared under optimum conditions showed a quantum efficiency of 78.63% and a moderately high life time of 1.217 ms.
AB - The solvothermal synthesis of highly luminescent and homogeneous Gd 2O3:Eu3+ nanophosphor using diethylene glycol as medium, followed by controlled combustion with citric acid as fuel is reported. The influence of concentrations of carboxylic acid and metal cations on the structure, morphology and luminescence properties are investigated in detail. The microscopic investigations indicate the nanocrystalline nature and the strong influence of cation concentration on the size, shape and agglomeration of the particles. It is found that increase in concentration of metal cations lead to the reduction in agglomeration of nanophosphors. The large value of intensity parameter Ω2, suggested that Eu 3+ ions reside in a more asymmetric environment, resulted in intense emission due to 5D0-7F2 electric dipole transition. Emission decay analysis of the samples exhibited one exponential nature. The samples prepared under optimum conditions showed a quantum efficiency of 78.63% and a moderately high life time of 1.217 ms.
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U2 - 10.1016/j.ceramint.2013.10.020
DO - 10.1016/j.ceramint.2013.10.020
M3 - Article
AN - SCOPUS:84889078514
SN - 0272-8842
VL - 40
SP - 2915
EP - 2926
JO - Ceramics International
JF - Ceramics International
IS - 2
ER -