Energy-transfer processes in nonstoichiometric and stoichiometric Er.sup.3+./sup., Ho.sup.3+./sup., Nd.sup.3+./sup., Pr.sup.3+./sup., and Cr.sup.3+./sup. -codoped Ce:YAG transparent ceramics: toward high-power and warm-white laser diodes and leds

0577805 - FZÚ 2024 RIV US eng J - Journal Article
Bartosiewicz, K. - Szysiak, A. - Tomala, R. - Golebiewski, P. - Weglarz, H. - Nagirnyi, V. - Kirm, M. - Romet, I. - Buryi, Maksym - Kučerková, Romana - Jarý, Vítězslav - Wzorek, M. - Buczynski, R.
Energy-transfer processes in nonstoichiometric and stoichiometric Er³⁺, Ho³⁺, Nd³⁺, Pr³⁺, and Cr³⁺ -codoped Ce:YAG transparent ceramics: toward high-power and warm-white laser diodes and leds.
Physical Review Applied. Roč. 20, č. 1 (2023), č. článku 014047. ISSN 2331-7019. E-ISSN 2331-7019
Institutional support: RVO:68378271
Keywords : light-emitting-diodes * color rendering index * luminescence properties * Ce³⁺ * phosphor * crystals * centers * driven * perovskite * stability
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 4.6, year: 2022
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevApplied.20.014047

Transparent light-converting Y3Al5O12:Ce (YAG:Ce) ceramics have become promising materials for advanced light-emitting diode and laser-driven white lighting technology. However, their functionality is highly dependent on factors such as structural quality, uniformity of dopant distribution, presence of defects, and cost of fabrication. The emission of YAG:Ce ceramics remains thermally stable when high-power-density laser excitation is uniformly spread over the entire surface area of the ceramics due to light-scattering processes. The development of light-scattering centers that can provide homogeneous white light in ceramics is crucial. The co-doping of YAG:Ce3+ with red-emitting ions (Er3+, Ho3+, Nd3+, Pr3+, and Cr3+) was carried out and slight non-stoichiometry was induced in the present study to improve the photoconversion parameters.
Permanent Link: https://hdl.handle.net/11104/0346900