| Autor: |
Boukerika, A., Hammoum, K., Zaidi, L., Benharrat, L., Larbah, Y., Selmi, N., Kdib, D. E. |
| Předmět: |
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| Zdroj: |
Journal of Inorganic & Organometallic Polymers & Materials; Aug2024, Vol. 34 Issue 8, p3408-3419, 12p |
| Abstrakt: |
In this paper, the effect of cross-linking agent on structural, morphological and luminescence properties of Ce-doped Gadolinium–aluminium–gallium garnet (called GAGG:Ce3+) was studied. Monoethylene glycol (EG) and various molecular weights (MWs) of Polyethylene glycol (PEG 400 and 1000) were used as cross-linking agents for sol–gel derived samples which were characterized by differential scanning calorimetry/thermogravimetry (DSC/TG), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectrometry (FTIR) and photoluminescence (PL). XRD analysis showed that GAGG: Ce3+ crystallized in a single stable cubic phase for EG prepared sample and, independently in mixed cubic/perovskite phases for PEG 400 and 1000 prepared samples. FE-SEM investigation indicated a significant influence of the cross-linking agent on the morphology and the size of particles. Largest particles were obtained in PEG 1000 sample with an average size of ~ 414 nm. For PL, the highest emission intensity was observed for EG sample which is ascribed to single cubic phase. However, high luminescence quenching was found in high MWs of PEG samples that can be attributed to the growth of secondary phases, defect generation and high Ce4+ content. The nanogarnet obtained using EG presented a pure stable cubic phase and high luminescence emission making it a potential candidate to serve as an efficient scintillator. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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