Preparation and photoluminescence of Bi~(3+)-doped strontium choloapatite nanorods

摘要

The photoluminescence properties of Bi~(3+)-doped Sr_5(PO_4)_3Cl nanocrystals with rod-like structures prepared by a simple precipitation method were investigated. The obtained nanorods had diameters of 10-20 run and lengths of 50-200 nm observed by transmission electron micrograph (TEM). The photoluminescence spectra revealed that a strong blue emission band centered at 416 nm excited by 385 nm was ascribed to ~3P_1-~1S_0 transition in Bi~(3+) ions. The optimum dopant concentration for Bi~(3+) ions was 1.5 mol%, which could be attributed to energy migration to quenching centers.