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Tamrakar, Raunak Kumar; Bisen, D. P; Upadhyay, Kanchan; Sahu, I. P; Sahu, Manjulata
2016-September-26, Letnik: 6, Številka: 95Journal Article
Er 3+ doped Gd 2 O 3 phosphors were prepared via solution combustion synthesis method. Structural characterization and the luminescence behaviour of the prepared phosphors were determined and compared. The average crystal size for the phosphors yielded was in the nanometre range, which was calculated using XRD and confirmed by SEM and TEM techniques. Compositional analysis was carried out using FTIR. Qualitative and quantitative information regarding the powder sample were measured using EDX spectroscopy. The EDX and FT-IR spectra confirm the Er 3+ element was present in the Gd 2 O 3 :Er 3+ phosphors. For the photoluminescence studies the emission spectra were recorded under excitation at 275 nm. All the phosphors give emission peaks in the visible region. The effect of annealing and the Er 3+ concentration on the emission spectra was studied for the prepared phosphors. The specific colours produced by the prepared phosphors were determined using the CIE chromaticity technique. The emitted coloured was tuned by determining the CIE coordinates for different concentrations of Er 3+ . Er 3+ doped Gd 2 O 3 phosphors were prepared via a combustion synthesis method. The prepared phosphor emits visible green colour.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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