2O 3·H 2O:Ln 3+ (Ln=Eu, Tb) phosphors: Morphology-tunable and luminescence properties]]>

摘要

Abstract4ZnO·B2O3·H2O:Ln3+(Ln=Eu, Tb) phosphors with different morphologies have been successfully synthesized via one-step hydrothermal method through regulating the molar amount of Eu3+and Tb3+. Comprehensive scanning electron microscopy (SEM), X-ray diffraction (XRD) Fourier transform infrared spectrum (FT-IR) and inductively coupled plasma atomic emission spectrometer (ICP-AES) characterizations all confirm that obtained products are 4ZnO·B2O3·H2O:Ln3+(Ln=Eu, Tb). The experimental results displayed that the morphology and photoluminescence of compounds is regularly changed with increased the molar amount of rare earth ions. For the Eu3+-doped, Tb3+-doped and Eu3+/Tb3+co-doped 4ZnO·B2O3·H2O phosphors of morphologies, the rod-like structures gradually changed to flower-like structures, fine wire-like structure and hybrid structure, respectively. To their photoluminescence, the Eu3+shows a red emission (615nm); the Tb3+shows a green emission (545nm); for the Eu3+/Tb3+co-doped 4ZnO·B2O3·H2O phosphors, a combin