Acta Optica Sinica, Volume. 30, Issue s1, 100105(2010)
Optical Properties of Ti4+ Doped β-Zn2SiO4 Glass-Ceramic
A novel Ti4+ doped SiO2-Al2O3-ZnO-K2CO3 is synthesized. Its X-ray diffraction (XRD) pattern, excitation spectrum and emission spectrum are measured and recorded at room temperature. The X-ray diffraction diffusion (XRD) data demonstrate that there are β-Zn2SiO4 nanocrystals in the glass substrate. Theory computation shows that the size of β-Zn2SiO4 nanocrystals is about 25 nm. Under 275 nm light excitation, the emission band (350~650 nm) originated from Ti4+ ion can be observed in Ti4+ doped glass ceramics. Compared with the precursor glass, upconversion luminescence enhances significantly in the glass ceramics. The CIE coordinate (x=0.242, x=0.363) of the Ti4+ doped glass ceramics heat-treated at 750 ℃ for two hours is close to the standard white-light illumination (X=0.333,Y=0.333). The results indicate that Ti4+ doped glass ceramics containing β-Zn2SiO4 nanocrystals can act as suitable materials for phosphor.
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Li Chenxia, Ye Renguang, Xu Shiqing, Zhao Shilong, Deng Degang, Zhuang Songlin. Optical Properties of Ti4+ Doped β-Zn2SiO4 Glass-Ceramic[J]. Acta Optica Sinica, 2010, 30(s1): 100105
Category: Materials
Received: Jun. 20, 2010
Accepted: --
Published Online: Dec. 22, 2010
The Author Email: Chenxia Li (lichenxia@163.com)