Luminescence of Ca3ZrSi2O9: Ce3+ blue phosphor with good thermal stability
| Autor: | Zishan Sun, Xinguo Zhang, Zhenpeng Zhu, Ziying Guo |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Biophysics Analytical chemistry Phosphor 02 engineering and technology General Chemistry Atmospheric temperature range 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry Atomic and Molecular Physics and Optics Silicate 0104 chemical sciences chemistry.chemical_compound chemistry Color purity Thermal stability 0210 nano-technology Luminescence Excitation Intensity (heat transfer) |
| Zdroj: | Journal of Luminescence. 207:430-434 |
| ISSN: | 0022-2313 |
| Popis: | Novel Ce3+-activated Ca3ZrSi2O9 silicate phosphors were firstly prepared by solid state reaction. The Ca3ZrSi2O9: Ce3+ phosphor shows narrow blue emission with color purity of 90% and internal efficiency of 37% upon excitation at 360 nm. The maximal luminescence intensity was observed at optimal Ce3+ concentration of 0.02. Additionally, the thermal stability of Ca3ZrSi2O9: Ce3+ were investigated in the temperature range of 20–200 °C, which keeps 70% of initial intensity at 200 °C. The results indicate that Ca3ZrSi2O9: Ce3+ can be utilized as a potential blue phosphor in UV LED devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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