23 February 2018 Synthesis of high-quality garnet-type Gd3Sc2Al3O12:Ce3+ nanocrystals
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Proceedings Volume 10533, Oxide-based Materials and Devices IX; 1053322 (2018) https://doi.org/10.1117/12.2300166
Event: SPIE OPTO, 2018, San Francisco, California, United States
Abstract
The synthesis of garnet-type Gd3Sc2Al3O12 (GSAG) nanoparticles doped with Ce3+ ions under solvothermal conditions in 1,4-butanediol is reported in this work. X-ray diffraction with LeBail fitting, Electron microscopy images and photoluminescence spectra were used to characterize the samples. A detailed Transmission Electron Microscopy study shows strong modification of particle morphology upon reaction temperature. Performing the reaction at high temperature and high pressure leads to a clear increase of the particle crystallinity and allows the formation of 100-nm sized nanocrystals with a small size dispersion (± 20 nm). The formation mechanism of these particles is through the self-orientation of primary crystalline grains. Yellow-orange luminescence of Ce3+-doped GSAG nanoparticles is observed upon 457-nm excitation. Photoluminescence intensity drastically increases when the particles are synthesized at high temperature, which is directly correlated to their crystal quality.
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Geraldine Dantelle, Geraldine Dantelle, Denis Testemale, Denis Testemale, Stephanie Kodjikian, Stephanie Kodjikian, Alain Ibanez, Alain Ibanez, } "Synthesis of high-quality garnet-type Gd3Sc2Al3O12:Ce3+ nanocrystals", Proc. SPIE 10533, Oxide-based Materials and Devices IX, 1053322 (23 February 2018); doi: 10.1117/12.2300166; https://doi.org/10.1117/12.2300166
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