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- Title
Color tunable SrSiO:Eu phosphors through the modification of crystal structure.
- Authors
Ju, Li-Cheng; Cai, Chao; Zhu, Qiang-Qiang; Tang, Jia-Ye; Hao, Lu-Yuan; Xu, Xin
- Abstract
Eu doped SrSiO phosphors were prepared through a solid-state reaction method. The phase-composition and photoluminescence of the obtained phosphors were systematically studied in terms of calcination temperature, Eu and Ba doping. High calcination temperature promoted the phase transformation from α′-SrSiO (orthorhombic) to β-SrSiO (monoclinic), while the doping of Eu or Ba ions could stabilize α′-SrSiO phase due to their long bond length with oxygen. Small amount of Eu/Ba doping prefers to occupy Sr(I) sites in the crystal lattice of SrSiO, acting as nucleation sites for both α′- and β-SrSiO phases. After nucleation, Eu ions distribute equally in the two sites. Through structural modification, the SrSiO:Eu phosphors could be controlled to emit different colors in a wide range, from blue to yellow, making them good candidates for tuning the chromaticity in application.
- Subjects
CRYSTAL structure; PHOSPHORS; SILICON oxide; PHOTOLUMINESCENCE; CALCINATION (Heat treatment); PHASE transitions; TEMPERATURE effect; SOLID state chemistry
- Publication
Journal of Materials Science: Materials in Electronics, 2013, Vol 24, Issue 11, p4516
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-013-1435-4