Synthesis of high-quality garnet-type Gd3Sc2Al3O12:Ce3+ nanocrystals

Geraldine Dantelle; Denis Testemale; Stephanie Kodjikian; Alain Ibanez

doi:10.1117/12.2300166

23 February 2018 Synthesis of high-quality garnet-type Gd₃Sc₂A_l3O₁₂:Ce³⁺ nanocrystals

Geraldine Dantelle, Denis Testemale, Stephanie Kodjikian, Alain Ibanez

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 Gd₃Sc₂A_l3O₁₂ (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.

Citation Download Citation

Geraldine Dantelle, Denis Testemale, Stephanie Kodjikian, and Alain Ibanez "Synthesis of high-quality garnet-type Gd₃Sc₂A_l3O₁₂:Ce³⁺ nanocrystals", Proc. SPIE 10533, Oxide-based Materials and Devices IX, 1053322 (23 February 2018); https://doi.org/10.1117/12.2300166

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