Synthesis, Structure and Photoluminescence Properties of Sm~(3+)-doped BiOBr Phosphor

摘要

Well-crystallized tetragonal layered BiOBr and Bi_(0.95)Sm_(0.05)OBr phosphors were prepared by the solid state method. These compounds were characterized using powder X-Ray diffraction and photoluminescence technique. In PL spectra, the electric dipole transitions dominate than other transitions which indicate that the Sm~(3+) ions occupy a site with an inversion center of BiOBr. CIE chromaticity diagram confirmed that these phosphors can be useful in the fabrication of red component in white light emitting diodes (WLEDs) for display device applications.