Multiwavelength excited novel red-emitting phosphor Eu3+-activated Li2Zn2( MoO4)(3)

作者：He Xianghong^*; Guan Mingyun; Zhang Chunyong; Shang Tongming; Lian Ning; Yao Yan

来源：Journal of Alloys and Compounds, 2011, 509(38): L341-L343.

DOI：10.1016/j.jallcom.2011.06.083

• Phosphors
• Solid state reactions
• X-ray diffraction
• Luminescence

Eu3+-activated Li2Zn2(MoO4)(3) multiwavelength excited red-emitting phosphors were synthesized via a solid state reaction. The structure and photoluminescence characteristics were investigated by X-ray powder diffraction and fluorescent spectrophotometry, respectively. The excitation spectrum included a strong broadband ranging from 250 to 350 nm and some sharp peaks at 363, 384, 395, 465, and 533 nm, which matchs the radiations of near-UV or blue light-emitting diodes chip well. Upon excitation either of near-UV or blue even green light, the intense red emission with 615 nm peak can be observed, which is ascribed to the D-5(0)-F-7(2) transition of Eu3+ ions. The chromaticity coordinates (x = 0.65, y = 0.34) of the as-obtained phosphor is very close to the National Television Standard Committee standard values (x = 0.67, y = 0.33). All these characteristics suggest that Eu3+-doped Li2Zn2(MoO4)(3) wavelength-conversion material to be suitable candidate red component for phosphor-converted white light-emitting diodes.

• 出版日期2011-9-22
• 单位江苏理工学院