Abstract
P2O5 – ZnO – Al2O3 – BaO – PbO phosphate glass system, doped with Zn1-xMnxTe nanocrystals (NCs) and with Eu2O3 (1 wt %) were successfully prepared. All samples were characterized with transmission electron microscopy (TEM), electron paramagnetic resonance (EPR), optical absorption (OA), photoluminescence (PL) and lifetime. TEM images confirm the formation of Zn1-xMnxTe NCs and EPR spectra confirm the substitutional incorporation of Mn2+ ions in these NCs. The overlap between the Mn2+ ion emission band (4T1 [4G] → 6A1 [6S] transition) and the Eu3+ ion absorption bands (7F0→ 5D0,1) suggests energy transfer (ET) from Mn2+ to Eu3+ ions. This ET phenomenon has been confirmed by PL spectra and decay curves, since the doping with Eu2O3 cause the decay of Mn2+ emission intensity when comparing with the emission of the Zn0·99Mn0·01Te sample, as well as of the 4T1 (4G) state lifetime. These results indicate that the said glass system can be potential candidates for use in various technological applications.
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