Compositional engineering of phase-stable and highly efficient deep-red emitting phosphor for advanced plant lighting systems.

ABSTRACT: Inorganic luminescent materials hold great promise for optoelectronic device applications, yet the limited efficiency and poor thermal stability of oxide-based deep-red emitting phosphors hinder the advancement of plant lighting technologies. Herein, a simple compositional engineering strategy is proposed to stabilize the phase, boost external quantum efficiency (EQE) and enhance thermal stability. The chemical modification of the PO₄ tetrahedron in NaMgPO₄:Eu by incorporating SiO₄ lowers the formation energy, leading to the generation of pure olivine phase and increasing the EQE from 27% to 52%, setting a record for oxide deep-red phosphors. In parallel, the introduced deep defect level improves thermal stability at 150 °C from 62.5% to 85.4%. Besides, the

SUBMITTER: Qiao J 

PROVIDER: S-EPMC11634966 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature