Reversible Photobleaching of Silver Clusters in Silica‐Based Glass under Ultraviolet Irradiation

• DOI: 10.1002/cptc.202200320
• Publication Date: 2023-07-08T10:05:46Z
• Authors: Leonid Yu. Mironov; Dmitriy V. Marasanov; Yevgeniy M. Sgibnev; Ekaterina V. Kulpina; Alina D. Parfenova; Artem A. Slobozha...; Mariia D. Sannikova; Rufina D. Kharisova; Ilya E. Kolesnikov; Evgeniy V. Zhizhin; Aleksandra V. Kor...
• Keywords: Photobleaching; Ultraviolet; Photodarkening; Quantum yield

Abstract Inorganic glasses doped with luminescent silver clusters are promising materials for photonic applications as white light generation, optical data storage, and spectral conversion. This work reports the photostability study of dispersed in silica‐based glass under continuous ultraviolet irradiation. The photobleaching process model is proposed quantum yield derived from experimental data. mechanism photoionization clusters. Degradation cluster luminescence reversible restores after heat treatment, indicating possibility to release trapped electrons return initial charge state effect treatment temperature on restoration studied, amount restored depends linearly temperature.