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- Title
NANO-SILVER ENHANCED UPCONVERSION EMISSION IN Nd<sup>3+</sup>: Ag-ZINC-TELLURITE GLASS.
- Authors
AKBAR, N.; DOUSTI, M. R.; SATTAR, A.; ALI, A.; AMJAD, R. J.
- Abstract
In this paper, enhanced infrared (IR) to visible upconversion (UC) emission in Nd3+ doped zinc-tellurite glass embedded with silver nano-particles is reported. Nucleation and growth of nano-particles are controlled with heat treatment above the glass transition temperature. Under an excitation of 797 nm which is in resonance with Nd3+ transition 4I9/2-4F5/2, three prominent upconverted bands, centered at 535, 600 and 668 nm, are observed in the visible region attributed to the 4G7/2→4I9/2, 4G7/2→4I11/2 (4G5/2+²G7/2→4I9/2) and 4G7/2→4I13/2 (4G5/2→4I11/2) transitions, respectively. Furthermore, all the bands are enhanced significantly in the presence of silver nano-particles. The transition centered at 535 nm is much more enhanced (~8 times) which is attributed to the local field effect of silver nanoparticles as well as an energy transfer from silver species to Nd3+ ions (Ag→Nd3+).
- Publication
Journal of Ovonic Research, 2019, Vol 15, Issue 3, p161
- ISSN
1842-2403
- Publication type
Academic Journal