Synthesis and luminescent properties of Eu~(2+) doped BaZn_2Si_2O_7 phosphors by combustion-assisted synthesis method

摘要

A green emitting phosphor of the orthorhombic BaZn_2Si_2O_7:Eu~(2+) was prepared by the combustion-assisted synthesis method and an efficient green emission under near-ultraviolet was observed. The luminescence and crystallinity were investigated by using luminescence spectrometry. X-ray diffractom-etry (XRD). The emission spectrum shows a single intensive band centered at 522 nm, which corresponds to the 4f6~5d~1 - > 4f~7 transition of Eu~(2+). The excitation spectrum is a broad extending from 260 to 465 nm, which matches the mission of ultraviolet light-emitting diodes (UV-LEDs).