Nanostructuration of YAG:Ce Coatings by ZnO Nanowires: A Smart Way to Enhance Light Extraction Efficiency.

ABSTRACT: In this study, we report on the enhancement of the light extraction efficiency of sol-gel-derived Y₃Al₅O₁₂:Ce³⁺ (YAG:Ce) coatings using ZnO nanowire (NW) arrays. The ZnO NWs were grown by hydrothermal synthesis from a ZnO seed layer directly deposited on a YAG:Ce coating. Highly dense and vertically aligned ZnO NW arrays were evidenced on the top of the YAG:Ce coating by electron microscopy. A photoluminescence study showed that this original design leads to a different angular distribution of light together with an increase in emission efficiency of the YAG:Ce coating upon blue excitation, up to 60% more efficient compared to a non-structured YAG:Ce coating (without NWs). These improvements are ascribed to multi-scattering events for photons wit

SUBMITTER: Amara N 

PROVIDER: S-EPMC9332156 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature