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Abstract 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… Click to show full abstract
Abstract 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.
Journal Title: Journal of Luminescence
Year Published: 2019
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