Year: 2026
Type: conference-paper
Abstract: A novel Mn 4+ -doped SrWO 4 -Sr 2 WO 5 phosphor (SWT-SWO:Mn 4+ ) was successfully synthesized using a conventional solid-state reaction method. X-ray diffraction (XRD) analysis confirmed the coexistence of two crystalline phases, SrWO4 (space group I41/a (88)) and Sr 2 WO 5 (space group Pnam (62)). Scanning electron microscopy (SEM) images and energy-dispersive X-ray spectroscopy (EDS) demonstrated the high purity of the material after annealing at 900 °C. Under 323 nm excitation, the phosphor exhibits intense deep-red emission centered at 692 nm, attributed to Mn 4+ ions occupying both tetrahedral and octahedral coordination sites, as supported by photoluminescence excitation (PLE) and photoluminescence (PL) spectra. These findings demonstrate that SWT-SWO:Mn 4+ phosphor is a promising candidate for tunable deep-red emission in red LED devices and indoor plant cultivation lighting.
Authors: Vu Ngoc Bao, Hoang Gia Chuc
Institution: Phenikaa University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7204987496