Journal
MEASUREMENT
Volume 105, Issue -, Pages 114-119Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.measurement.2017.04.007
Keywords
Tellurite glass; Upconversion; Er3+/Yb3+ co-doping; Silver nanoparticles
Funding
- World Academy of Sciences (TWAS), Italy [15-036 RG/REN/AS_C-FR3240288933]
- Iranian Nanotechnology Council [89308, 119115]
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The effect of the silver nanoparticles on the optical response of the Er3+/Yb3+ co-doped zinc tellurite glasses was studied. The glasses were characterized by optical absorption spectroscopy, transmission electron microscopy and X-ray diffractometry. The characteristic radiative emissions of Er3+ ions at visible (upconversion) and near-infrared spectral regions were recorded by exciting the samples at 980 nm excitation wavelength. The intensities of upconversion and near-infrared emissions were enhanced up to 180% and 130%, respectively. The increase in luminescence intensity is attributed to the enhanced effective localized field induced by silver nanoparticles. Lifetime measurements were conducted to investigate the presence of energy transfer between Er3+ and silver. (C) 2017 Elsevier Ltd. All rights reserved.
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