1.
Guang Pu Xue Yu Guang Pu Fen Xi
; 23(3): 435-7, 2003 Jun.
Article
in Chinese
| MEDLINE
| ID: mdl-12953507
ABSTRACT
Strong green up-conversion emission was observed for the first time in europium and dysprosium co-doped strontium aluminate (SrAl2O4: Eu2+, Dy3+) phosphor under 980 nm infrared excitation at room temperature. The up-conversion emission spectrum of phosphors was quite different from that of down-conversion emission spectrum excited by ultraviolet or visible lights. The two kinds of emission spectra implied that there are different mechanisms of emission. The X-ray diffraction (XRD) results revealed that the prepared phosphor has the same crystal lattice and composition as that reported previously.