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Effect of Thermal Initiator Concentrations on the Structure and Optical Band Gaps of Polyvinylsilazane-Derived SiOCN Ceramics.
- Source :
-
International Journal of Applied Ceramic Technology . Sep/Oct2015, Vol. 12 Issue 5, p985-990. 6p. - Publication Year :
- 2015
-
Abstract
- Si OCN ceramics are formed by the thermal decomposition of a polyvinylsilazane precursor in the presence of a dicumyl peroxide ( DP) thermal initiator with different concentrations. The Si OCN ceramics pyrolyzed at 1000°C with different concentrations of DP are characterized with X-ray diffraction, transmission electron microscope, electron paramagnetic resonance, and UV-visible spectroscopy. We find that the structure and optical band gap of the Si OCN ceramics can be changed by altering the concentration of DP. There is a critical concentration, at which the structural and optical behavior varied in different ways as a function of the concentration of DP. The detailed mechanism is discussed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1546542X
- Volume :
- 12
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- International Journal of Applied Ceramic Technology
- Publication Type :
- Academic Journal
- Accession number :
- 109305939
- Full Text :
- https://doi.org/10.1111/ijac.12375