Phosphorescence by Trapping Defects in Boric Acid Induced by Thermal Processing

• Published in: Advanced optical materials Vol. 12; no. 13
• Main Authors: Stagi, Luigi, Malfatti, Luca, Zollo, Alessia, Livraghi, Stefano, Carboni, Davide, Chiriu, Daniele, Corpino, Riccardo, Ricci, Pier Carlo, Cappai, Antonio, Carbonaro, Carlo Maria, Enzo, Stefano, Khaleel, Abbas, Adamson, Abdulmuizz, Gervais, Christel, Falqui, Andrea, Innocenzi, Plinio
• Format: Journal Article
• Language: English
• Published: Weinheim Wiley Subscription Services, Inc 01.05.2024; Wiley
• Subjects: Acids; Afterglows; borates; boric acid; Boron oxides; Chemical Sciences; Current carriers; Defects; Electron paramagnetic resonance; electron traps; Heat treatment; Phosphorescence; Photoluminescence; Room temperature; Thermoluminescence; Trapped charge; Trapping

The phosphorescence of boric acid (BA, H3BO3) at room temperature is a puzzling phenomenon subject to controversial interpretations although the role of structural defects has not yet been considered. Heat treatments of boric acid cause its transformation into the metaboric phase and amorphous boron...