Synthesis and characterization of erbium silica glass and glass-ceramics for potential low-emissivity coating applications

作     者：Ibrahim, S. El-Kheshen, A. A. Abdel-baki, M. Fayad, A. M. Hamdy, Y. M. Ibrahim, Mohamed M. Marzouk, M. A. 

作者机构：Natl Res Ctr Glass Res Dept 33 EL Bohouth St Former EL Tahrir StPO 12622 Dokki Giza Egypt Natl Res Ctr Spect Dept 33 El Bohouth St Former EL TahrirPO 12622 Dokki Giza Egypt Bldg Phys Inst BPI Housing & Bldg Natl Res Ctr HBRC POB 1770EL Bohouth St former EL Tahrir St Cairo Egypt Pharos Univ Alexandria Dept Pharmaceut Canal Mahmoudiah St Smouha Alexandria Egypt 

出 版 物：《CERAMICS INTERNATIONAL》 (Ceram Int)

年 卷 期：2025年第51卷第1期

页      面：458-472页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Science  Technology & Innovation Funding Authority (STDF) 

主　　题：Er 3+doping Sol-gel Structural properties Optical parameters Photoluminescence 

摘      要：Silica glasses co-doped with varying concentrations of Er3+ (0.8, 1.5, 4, and 8 mol %) were fabricated employing the sol-gel technique. The effects of erbium concentration were evaluated through several characterization techniques, including X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), UV-visible transmission spectroscopy, and photoluminescence analysis. The incorporation of erbium ions significantly altered the structural, optical, and photoluminescence properties of the doped glasses. XRD analysis revealed the presence of SiO2 in both tetragonal and hexagonal forms, along with Er2SiO5 crystalline phases. SEM images showed irregular rod-shaped structures with agglomeration and micro-flake cubic shapes. FTIR spectroscopy provided insights into the structural characteristics of the materials. Notably, the optical band gap energy of the glassy films increased, accompanied by fluctuating Urbach energy and a slight reduction in the refractive index, attributed to structural changes within the glass network. Photoluminescence spectra indicated strong emissions at 523 and 543 nm, corresponding to the transitions 2 H 11/2 - 4 I 15/2 and 4 S 3/2 - 4 I 15/2 , respectively. Additionally, a notable near-infrared emission at 1532 nm was observed, linked to the transition 4 I 13/2 - 4 I 15/2 . The color coordinates of the produced glasses were found to be near the green or yellow regions, suggesting potential applications in optical amplifiers, lasers, and low-emissivity coatings.