Effect Of Thermal Initiator Concentrations On The Structure And Optical Band Gaps Of Polyvinylsilazane-Derived Siocn Ceramics

Abstract

SiOCN 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 SiOCN 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 SiOCN 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.

Publication Date

9-1-2015

Publication Title

International Journal of Applied Ceramic Technology

Volume

12

Issue

5

Number of Pages

985-990

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1111/ijac.12375

Socpus ID

84940959290 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84940959290

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