Abstract
Luminescence appearance of Mn-doped zinc silicate (Zn2SiO4:Mn2+, ZSM) formed in supercritical water at 400 °C and 29 MPa at reaction times from 1 to 4320 min was studied in the relation to its phase formation mechanism. Appearance of luminescent ZSM from green emission by α-ZSM and yellow emission by β-ZSM occurred over the same time period during the onset of phase formation at a reaction time of 2 min. Luminescence appeared at a much lower temperature and at shorter reaction times than the conventional solid-state reaction. Needle-like-shaped α-ZSM was the most stable particle shape and phase in the supercritical water reaction environment and particles formed via two routes: a homogenous nucleation route and a heterogenous route that involves solid-state diffusion and recrystallization.
Original language | English |
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Pages (from-to) | 1307-1313 |
Number of pages | 7 |
Journal | Journal of Solid State Chemistry |
Volume | 181 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2008 Jun 1 |
Keywords
- Hydrothermal reaction
- Inorganic phosphor
- Low-temperature process
- Luminescence appearance
- Phase formation
- Supercritical water
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry