Enhanced red emission from the SnO 2 -BaSi 2 O 5 :Eu 3+ (SnO 2 -BSO) phosphor for NUV-pumped WLED applications
Year: 2026
Type: conference-paper
Abstract: In this study, SnO 2 -BaSi 2 O 5 :Eu 3+ (SnO 2 -BSO:Eu 3+ ) phosphors were synthesized via a simple solid-state reaction. Structural and compositional analyses using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS) confirmed the formation of stable phases and high-purity powders after annealing at 1200 °C. Photoluminescence excitation (PLE) and emission (PL) spectra revealed that SnO 2 :Eu 3+ absorbs in the UV region (~320 nm) and emits in the orange range (580 – 590 nm). Incorporation of the BaSi 2 O 5 host with SnO 2 significantly enhanced the orange - red emission band (580 – 650 nm) and shifted the absorption toward stronger near-UV (NUV) sensitivity (~395 nm). The optimized phosphor, when coated onto a 395 nm LED chip, exhibited strong potential for supplementing orange-red light in white LED (WLED) applications.
Authors: Hoang Gia Chuc, Vu Ngoc Bao, Manh Trung Tran
Institution: Phenikaa University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7204998464