Self-crystallized Ba2LaF7:Nd3+/Eu3+ glass ceramics for optical thermometry
Source abstract
Abstract
Abstract Eu3+/Nd3+-codoped Ba2LaF7 transparent bulk glass ceramics were successfully fabricated by glass self-crystallization. The structure and morphology of the sample were investigated by X-ray diffraction, transmission electron microscopy (TEM), high-resolution TEM, and selected area electron diffraction. The fluorescence intensity ratios of Nd3+ emission at 800 nm to the Eu3+ emission at 699 nm (5D0 → 7F4) were measured under 578.3 nm laser excitation in a wide temperature range from 290 to 740 K. A relatively good temperature sensing performance was obtained with a maximum relative sensitivity of 1.02% K−1 at 420 K. Both the emission peaks for temperature sensing were located in the optical window of biological tissue, which is favorable for biomedical applications. The results indicate that Ba2LaF7:Nd3+/Eu3+ glass ceramics have a potential application as temperature probes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Glass properties and applications · Optical properties and cooling technologies in crystalline materials
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