Red luminescence properties of Te4+-doped CaYAlO4 phosphors
Source abstract
Abstract
Abstract Novel Te4+-doped CaYAlO4 phosphors were obtained by a solid-state reaction. Te4+-doped CaYAlO4 samples had a tetragonal crystal structure and emit deep-red light at 715 nm excited by 325 nm, which was ascribed to Te4+ luminescence center. The luminescent intensity of CaYAlO4: Te4+ samples increased with the sintering temperature increasing, reaching a maximum at 1500 °C, then began to drop. The optimal Te4+ doping concentration was 2 mol%. Lifetime of CaYAlO4: 2%Te4+ phosphors was 1.54 ms. The luminescent intensity of CaYAlO4: 2%Te4+ phosphors decreased with the increase of test temperature and reached to 35.0% of the initial value at 425 K. The CaYAlO4: Te4+ phosphors have potential applications in bio-imaging, temperature sensor, solid-state lighting and solar cells etc.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Radiation Detection and Scintillator Technologies · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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