The effect of ions of rare-earth metals on the temperature dependence of the luminescence of molecular clusters of silver in oxyfluoride glasses

Abstract

The influence of temperature on the spectral composition and luminescence intensity of oxyfluoride glasses containing molecular clusters of silver and ions of the rare-earth metals samarium and terbium has been investigated. It is shown that introducing these ions into the composition of the glass increases the luminescence intensity of the molecular clusters of silver and the temperature sensitivity of their luminescence intensity. In oxyfluoride glass with molecular clusters of silver and Tb 3 ions, the overall luminescence intensity in the 20°C-250°C temperature range is attenuated by a factor of 50. It is shown that molecular clusters of silver are characterized by temperature sensitivity of the luminescence intensity in the range 0.045-0.099 dB∕°C.OCIS codes: (160.2540) Fluorescent and luminescent materials; (160.5690) Rare-earth-doped materials; (280.4788) Optical sensing and sensors. http://dx.

Luminescent fibers with molecular clusters of silver for measuring the refractive index of the ambient medium

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Molecular‐Like Ag Clusters and Eu3+ Co‐Sensitized Efficient Broadband Spectral Modification with Enhanced Yb3+ Emission

“…Different from the Ag nanoparticles (NPs) that show characteristic surface plasmonic resonance (SPR) absorption, the ML silver clusters consist of only several to hundred silver atoms and only exhibit radiative emission . As an intermediate state lying between single Ag + and Ag NPs, the formation and the size distribution of ML‐Ag cluster is very sensitive to both the glass matrix and the doped RE ions . Recent researches indicated that the ML silver clusters are efficient sensitizer for Eu 3+ and Bi 3+ to enhance their luminescence intensity through direct energy‐transfer (ET) process .…”

Formation of luminescent optical waveguides in silicate glass matrix by the ion-exchange technique

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