Luminescence Properties of Eu2+‐Doped Glass Ceramics Containing SrF2 Nanocrystals

The Eu 2+ ‐doped glasses and glass ceramics containing SrF 2 nanocrystals were prepared and their luminescence properties were investigated. The formation of SrF 2 nanocrystals in glass ceramics was confirmed by X‐ray diffraction and transmission electron microscopy. The melting in a reducing atmosphere and then the crystallization of glass resulted in the reduction of almost all Eu 3+ ions to Eu 2+ ions in the glass ceramics. The Eu 2+ ‐doped glass ceramics containing SrF 2 nanocrystals exhibited a much stronger broad blue emission band and a longer lifetime of excited state than the glasses.