Open AccessBright blue emissions on UV-excitation of LaBO3 (B=In, Ga, Al) perovskite structured phosphors for commercial solid-state lighting applications
Author(s) -
Brijesh Kumar,
Temesgen Samuel,
Samatha Bevara,
K. Ramachandra Rao,
Satya Kamal Chirauri
Publication year - 2022
Publication title -
chimica techno acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.128
H-Index - 1
eISSN - 2411-1414
pISSN - 2409-5613
DOI - 10.15826/chimtech.2022.9.1.07
Subject(s) - photoluminescence , phosphor , materials science , scanning electron microscope , doping , solid state lighting , perovskite (structure) , spectroscopy , luminescence , photoelectric effect , analytical chemistry (journal) , light emitting diode , energy dispersive x ray spectroscopy , x ray photoelectron spectroscopy , optoelectronics , absorption (acoustics) , photoluminescence excitation , chemistry , crystallography , nuclear magnetic resonance , physics , chromatography , quantum mechanics , composite material
Bright blue photoluminescence (PL) was obtained from Bi3+-activated LaBO3 (B = In, Ga, Al) perovskite nanophosphors. A cost-effective and low-temperature chemical route was employed for preparing Bi3+ doped LaBO3 (B=In, Ga, Al) which were then annealed at 1000 °C. The phase formation, morphological studies and luminescent properties of the as-prepared samples were performed by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence and optical absorption spectroscopy. Comparison of emission intensities, lifetime studies, energy band gaps and color purity of all samples (pure and Bi3+ doped) were investigated for promising applications in UV light-emitting diodes, variable frequency drive (VFD), field emission display (FED), and other photoelectric fields.