Photoluminescent temperature sensor based on borate and phosphate glasses doped with copper clusters

Abstract

The research of the luminescent properties of the inorganic glasses doped with copper molecular clusters that can be used as a sensitive medium of the temperature sensors is presented. The luminescent spectra of the borate and phosphate glasses in the temperature range 77-623 K are examined. The big luminescent thermochromism for borate glasses is observed: from 293K to 623K the luminescent band shift is found out to be 110nm.

Monovalent copper-mediated UV to NIR luminescence down-shifting in Yb3+-doped glass

“…Discussion is found in the literature regarding the luminescence of copper-doped glasses with respect to whether single copper ions or copper dimers or clusters are responsible for the emission. 15,20,31,33,36–40 The extent to which molecule-like copper clusters manifest depends on various factors such as the host structural properties, metal solubility, dopant concentration, and glass thermal history. The present melt-quenched CuO/SnO-containing phosphate glass has been characterized by high metal solubility 21 likely enhanced by the metalophilic agent tin, 41 which has been indicated to impact the PL properties.…”