Upconversion luminescence study of Er³⁺in Gadolinium-Calcium-Silicoborate glasses

Abstract

The new glass series were prepared in compositions 25Gd2O3-10CaO-10SiO2-(55-x) B2O3-xEr2O3(where x is 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol %) by normal melt-quenching technique at the melting temperature of 1,400 °C. The optical spectra were measured and shown absorption bands were assigned to appropriate f-f electronic transitions of Er3+ions from the4I15/2ground state to the following excited states:4G11/2,2H9/2,45/2,4F7/2,2H11/2,4S3/2,4F9/2,4I9/2and4I11/2. Single peak from upconversion luminescence was observed at 531 nm (green) is assigned to the2H11/2→4I15/2. In this work, the strongest peak at 2.0% mol of Er2O3was observed. In this work, suggests that the Er3+ion in gadolinium calcium silicoborate glasses possibly considered as a potential candidate for applications in upconversion-based optical devices. © (2013) Trans Tech Publications, Switzerland.