Spectroscopy and Spectral Analysis, Volume. 31, Issue 7, 1743(2011)
Luminescence of Sr2Mg(BO3)2∶Tb3+ under Vacuum Ultraviolet Excitation
The phosphors of Tb3+ activated Sr2Mg(BO3)2 were prepared by high temperature solid-state reaction technique. The phase purity was characterized by the powder X-ray diffraction (XRD). The luminescence properties in VUV-Vis range as well as the decay curves were investigated. The results demonstrate that the band near 178 nm in the VUV excitation spectra is ascribed to the host-related absorption. The bands of lowest spin-allowed and spin-forbidden f—d transition are located at 235 and 278 nm, respectively. The strongest emission is at 543 nm upon 172 nm excitation and with the color coordinate (0.30, 0.45). The decay time is about 2.8 ms.
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LIN Hui-hong, LIANG Hong-bin, SU Qiang, ZHANG Guo-bin. Luminescence of Sr2Mg(BO3)2∶Tb3+ under Vacuum Ultraviolet Excitation[J]. Spectroscopy and Spectral Analysis, 2011, 31(7): 1743
Received: Sep. 28, 2010
Accepted: --
Published Online: Aug. 29, 2011
The Author Email: Hui-hong LIN (cesbin@mail.sysu.edu.cn)