Abstract

ABSTRACT Tb 3+ -doped Lu 3 Al 5 O 12 (hereinafter referred to as LuAG:Tb) films were successfully prepared by Pechini sol-gel process and spin-coating technique on carefully cleaned (111) silicon wafer. The microstructure and optical properties of the LuAG:Tb films were studied by X-ray diffraction (XRD), at omic force microscopy(AFM), as well as photoluminescence (PL) spectra. The XRD results showed that the precursor films started to crystallize at about 900 . All as-calcined LuAG:Tb films showed the Tb 3+ characteristic emission bands. Keywords :LuAG:Tb; Pechini sol-gel; Microstructure; Decay 1. INTRODUCTION Lutetium aluminum garnet (LuAG) exists in cubic form with a garnet structure. Due to its high density (6.73g.cm-3,94% of BGO), excellent thermal conductivity and good chemical stability, this host lattice containing rare earth ions as luminescent activators is widely studied as an efficient scintillator [1] . Recently, it has been widely used in near-infrared solid-state lasers, high-energy physics, nuclear physics, particles and medical imaging fields

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