Title

Effect Of Thermal Initiator Concentration On The Electrical Behavior Of Polymer-Derived Amorphous Silicon Carbonitrides

Abstract

The electric conductivity of polymer-derived silicon carbonitrides made from a polysilazane modified with different amounts of thermal initiator is measured at room temperature. It is found that the thermal initiator has a significant effect on the electric conductivity, which first increases and then decreases with increasing thermal initiator concentration. The highly conductive sample exhibits a very high piezoresistive coefficient and weak temperature dependence as compared with the low conductive samples. The microstructures of the materials are characterized using a Raman spectroscope. Based on these results, two conducting mechanisms are identified: the highly conductive sample is dominated by the tunneling-percolation mechanism, while the low conductive samples are dominated by matrix phases. The effect of the thermal initiator on the development of the microstructures of the materials is discussed. © 2008 The American Ceramic Society.

Publication Date

12-1-2008

Publication Title

Journal of the American Ceramic Society

Volume

91

Issue

12

Number of Pages

3971-3975

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1111/j.1551-2916.2008.02782.x

Socpus ID

57649227267 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/57649227267

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