Microwave synthesis of CaSiO3:(Eu2+, Dy3+) nanorods and verification on luminescence properties

CaSiO3:(Eu2+, Dy3+) nanorods were synthesized by microwave irradiation process with assistant of polyethylene glycol (PEG)-1000. The X-ray diffraction results show that the obtained samples are of beta-CaSiO3 phase with perovskite structure. The TEM images show that the obtained samples are of nanorods with diameter around 40 nm and length ranging from 0.6 to 1.2 mu m. PEG-1000 plays an important role in the formation of claviform morphology. The excitation and emission spectra of CaSiO3:(Eu2+, Dy3+) samples show characteristic transitions of Eu2+ ions. All samples give a green emission peaked at 512 nm when they are excited at 366 nm. The co-doped Dy3+ ions enhance the luminescence intensity greatly but have no obvious influences on location of emission peak. CaSiO3:(0.05Eu(2+), 0.03Dy(3+)) samples give the highest luminescence intensity.