hite upconversion luminescence of KF-KYb_3F10:Tm nano complex synthesized by a hydrothermal method

摘要

KF-KYb3F10:Tm nano complex was synthesized by low-temperature hydrothermal method.The samples were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).The effect of the annealing temperatures on the upconversion luminescence intensity was investigated.The results indicated that the prepared KF-KYb3F10:Tm nano complex was about 50 nm spherical luminous powder.Under the excitation of 980nm laser (LD),the upconversion emission peaks located at 445 nm,536 nm and 660 nm,respectively.The upconversion luminescence mechanism was discussed.