Combustion derived single phase Y₄Al₂O₉:Tb³⁺ nanophosphor: crystal chemistry and optical analysis for solid state lighting applications.

ABSTRACT: Cool green light emanating monoclinic Y_4-x Al₂O₉:xTb³⁺ (x = 1-5 mol%) nanophosphors have been fabricated through gel-combustion method. X-ray diffraction and transmission electron-microscopy data have been utilized to assess their structural and microstructural characteristics, including cell parameters and crystallite size. Uneven aggregation of nanoparticles in the nano-scale with distinctive porosity can be seen in the TEM micrograph. Kubelka-Munk model imitative diffuse reflectance spectra and an optical band gap of 5.67 eV for the Y_3.97Al₂O₉:0.03Tb³⁺ nanophosphor revealed high optical quality in the samples, which were thought to be non-conducting. The emission (PL) and excitat

SUBMITTER: Kumar P 

PROVIDER: S-EPMC9993242 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature