Physical and Optical Properties of PBT:Nd³⁺ Glass System

Abstract

Many trivalent rare earth ions such as Er³⁺, Tm³⁺, Ho³⁺, Pr³⁺, and Nd³⁺ were doped as absorption and emission centers in glass hosts. In this work, lead borotellurite (PBT) glass doped with neodymium ion (Nd³⁺) has been prepared and characterized by means of their physical and optical properties. The X-ray diffraction, density, and molar volume of the glasses have been measured and analyzed. The spectroscopic properties such as absorption and emission spectra have been identified using UV-Vis-NIR and photoluminescence spectrometer, respectively. Optical absorption spectra of the glass samples are recorded in the range 400–900 nm at room temperature. From the result, there are six significant absorption peaks observed that correspond to 525 nm, 584 nm, 683 nm, 747 nm, 805 nm, and 878 nm wavelengths, respectively. The most predominant wavelength to be used as excitation wavelength is at 584 nm. Four significant emission peaks have been observed centered at 485 nm, 560 nm, 605 nm, and 689 nm wavelengths that correspond to the strong blue, green, and red emission spectra. Some other results will be analyzed and discussed.