Preparation of europium-activated SrAl₂O₄ glass composites using the frozen sorbet technique

Unique photo-functionalities of luminescent Eu, Dy: SrAl₂O₄ glass ceramics with high transparency prepared by using the frozen sorbet technique are briefly reviewed. The crystalglass composites have remarkable light-storage ability (e.g., charge-carrier trapping) based on the properties of SrAl₂O₄ crystals, and these provide characteristic photo-functionalities such as longpersistent luminescence and mechanoluminescence. In this review, the specific preparation of transparent SrAl₂O₄ glass composites using the frozen sorbet technique and their optical properties are described as novel light-storage materials for energy applications.