Add time:07/23/2019         Source:sciencedirect.com

Fully amorphous LEAD BORATE (cas 10214-39-8) glasses triply doped with Dy3+/Tb3+/Eu3+ were synthesized and next studied using optical spectroscopy. The characteristic luminescence bands originating to electronic transitions of Dy3+/Tb3+/Eu3+ ions were observed under direct excitation of Dy3+. Moreover, the influence of concentration of rare earth ions on spectroscopic properties of lead borate glasses was examined. The obtained experimental results indicate that energy transfer between these rare earth ions is possible. From the emission spectra, the Commission Internationale de I'Eclairage (CIE) chromaticity coordinates (x, y) are calculated in relation to potential application lead borate glasses for white light emitting devices. It has been proved that our glass systems exhibit warm white emission originating from the simultaneous generation of several bands of Dy3+, Tb3+, Eu3+ under the UV–visible light excitation.

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