Abstract
This paper reports the luminescence properties of (13− x)(PbO–25Bi 2O 3–62GeO 2) glasses doped with Tb 3+ ions ( x=0.2, 0.5, 1.0, 1.5 and 2.0 mol%) which have been investigated upon excitation at λ ex=248, 261, 352, 370 and 380 nm, respectively. At excitation wavelength 370 nm, 1 mol% of Tb 3+ glass has shown an intense green emission and the photoluminescence spectral features have been analysed.
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