Archive > Volume 18 Issue 11 > 2022,18(11):683-686. DOI:https://doi.org/10.1007/s11801-022-2092-8 CSTR:[cstr] Prev Next
Enhancement of dual-broadband NIR emissions in Ag NPs embedded tellurite glass doped with Er3+/Tm3+/Ho3+ ions
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Abstract:
Tellurite glasses combined with metal silver nanoparticles (Ag NPs) and Er3+/Tm3+/Ho3+ ions were synthesized using melting and quenching technique, and the enhanced two-band near-infrared (NIR) fluorescence induced by Ag NPs was reported. Upon the excitation of 808 nm laser diode (LD), dual-broadband and flat NIR fluorescence ranging from 1 350 nm to 1 600 nm and from 1 600 nm to 2 200 nm with full width at half maximum (FWHM) of 154 nm and 374 nm respectively in Ag NPs embedded tellurite glass doped with appropriate concentrations of Er3+/Tm3+/Ho3+ ions has an obvious enhancement of about 40% with respect to the glass sample without Ag NPs, which is attributed to the local field effect caused by Ag NPs and energy transfer from Ag species to rare-earth ions. The enhanced dual-broadband and flat NIR fluorescence enables us to develop various NIR band photonic devices flexibly.
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