Structural and luminescent properties of YOF:Eu3+ nanocrystals embedded glass-ceramics derived by Spark Plasma Sintering
Source abstract
Abstract
Abstract Luminescent silica-based glass-ceramics (GCs) embedded with YOF:Eu3+ nanocrystals (NCs) were prepared by Spark Plasma Sintering at a relatively low temperature (980 °C) within 10 min. XRD data and TEM images clearly confirmed the presence of highly crystallized tetragonal YOF:Eu3+ NCs in the amorphous silica glass matrix without obviously interfacial reaction. The GC samples showed typical intense reddish-orange emission, which can be ascribed to the 5D0→7Fj transitions of Eu3+, upon excitation of 393 nm. Additionally, a small PL intensity ratio of 5D0→7F2/5D0→7F1 revealed that majority of Eu3+ ions are well retained in YOF NCs after sintering, which was further verified by the Judd-Ofelt parameters. The lifetime of GC sample was well fitted by a single exponential function and calculated to be 1.086 ms, which was similar to that of as-synthesized YOF:Eu3+ NCs (1.104 ms). Hence, these results demonstrated that YOF:Eu3+ NCs were well protected via this fabrication method of GC composites, guaranteeing high optical performance.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Lanthanide and Transition Metal Complexes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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