Luminescence of the near‐ultraviolet blue‐emitting Ba 9 Al 2 Si 6 O 24 :Ce 3+ phosphor
| Autor: | Yongfu Teng |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
010401 analytical chemistry Biophysics Analytical chemistry Phosphor 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Fluorescence 0104 chemical sciences Chemistry (miscellaneous) Band width Blue emitting Near ultraviolet 0210 nano-technology Luminescence Excitation Intensity (heat transfer) |
| Zdroj: | Luminescence. 36:256-260 |
| ISSN: | 1522-7243 1522-7235 |
| DOI: | 10.1002/bio.3915 |
| Popis: | A near-ultraviolet (NUV) blue-emitting phosphor Ba9 Al2 Si6 O24 :Ce3+ (BAS:Ce3+ ) was synthesized using a high-temperature solid-state reaction. BAS:Ce3+ had an excitation band peak at about 328 nm and showed a blue emission band. The NUV-blue emission band had a peak at about 386 nm with a band width of about 60 nm, attributed to the 5d-4f transition of Ce3+ . Fluorescent decay showed an exponential model with a lifetime of 27.2 nsec. At 150°C, the luminescence intensity decreased to 68.7% compared with the intensity at room temperature. |
| Databáze: | OpenAIRE |
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