Control of stoichiometry in garnet crystals presenting persistent luminescence

Teresa Delgado; Daniel Rytz; Guanyu Cai; Mathieu Allix; Haytem Bazzaoui; Emmanuel Veron; Bruno Viana

doi:10.1117/12.2649815

16 March 2023 Control of stoichiometry in garnet crystals presenting persistent luminescence

Teresa Delgado, Daniel Rytz, Guanyu Cai, Mathieu Allix, Haytem Bazzaoui, Emmanuel Veron, Bruno Viana

Proceedings Volume 12422, Oxide-based Materials and Devices XIV; 124220B (2023) https://doi.org/10.1117/12.2649815
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

In persistent luminescence materials, energy can be stored by controlled traps/defects under brief irradiation, namely few minutes under various wavelengths ranging from X-rays to natural daylight. This energy is then released at room temperature for several hours via light emission once the excitation is stopped. The paper is focused on the analysis of the persistent luminescence properties on single crystals of Ce³⁺ and Cr³⁺ co-doped gadolinium-yttrium-aluminum-gallium garnets of general formula Y_3-xGd_xAl₂Ga₃O₁₂ (YGAGG), to promote new applications of the persistent materials. Extending the range of excitation by using X-rays excitation is also proposed.

Conference Presentation

Citation Download Citation

Teresa Delgado, Daniel Rytz, Guanyu Cai, Mathieu Allix, Haytem Bazzaoui, Emmanuel Veron, and Bruno Viana "Control of stoichiometry in garnet crystals presenting persistent luminescence", Proc. SPIE 12422, Oxide-based Materials and Devices XIV, 124220B (16 March 2023); https://doi.org/10.1117/12.2649815

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