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Lead bismuth gallate glasses doped with Eu3+ and Dy3+ ions were examined using excitation and luminescence measurements. From excitation spectrum of Eu3+ ions the electron–phonon coupling strength and phonon energy of the glass host was calculated. Strong luminescence quenching of Dy3+ and enhancement of Eu3+ is well observed, which is due to presence of Bi3+ → Eu3+ and Dy3+ → Bi3+ energy transfer...
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