Enhanced red luminescence by gamma irradiation on GdPO4:Er3+@SiO2 nanophosphor
| Autor: | Anima S. Dadhich, Abhijit Saha, Saratchandra Babu Mukkamala, Vema Reddy Bheeram |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Doping Biophysics Phosphor 02 engineering and technology General Chemistry Radiation 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Photochemistry 01 natural sciences Biochemistry Atomic and Molecular Physics and Optics 0104 chemical sciences Photoexcitation Dosimetry Irradiation 0210 nano-technology Luminescence Gamma irradiation |
| Zdroj: | Journal of Luminescence. 207:408-415 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2018.11.032 |
| Popis: | The influence of gamma radiation on enhancement of red emission from Er3+ doped GdPO4@SiO2 nanophosphors was investigated. The luminescent emission was recorded after photoexcitation at 462 nm. The strong red luminescence at 690 nm corresponds to 4F9/2 → 4I15/2 transition. The luminescence intensity of the prepared phosphor had enhanced 2–4 folds and 4–6 fold after exposing to 150 kGy and 300 kGy gamma radiation, respectively. A linear response between luminescence intensity and irradiation dose was observed through PL dosimetry study. These biocompatible nanophosphors may have promising applications in biomedical and optoelectronic fields. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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