Structure and Electrical Properties of Carbon-Rich Polymer Derived Silicon Carbonitride (SiCN)
Abstract
This article reports on the structure and electronic properties of carbon-rich polysilazane polymer-derived silicon carbonitride (C/SiCN) corresponding to pyrolysis temperatures between 1100 and 1600 °C in an argon atmosphere. Raman spectroscopy, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), Scanning Electron Microscopy (SEM) and Hall measurements were used to support the structural and electronic properties characterization of the prepared C/SiCN nanocomposites. A structural analysis using Raman spectroscopy showed the evolution of sp2 hybridized carbon phase that resulted from the growth in the lateral crystallite size (La), average continuous graphene length including tortuosity (Leq) and inter-defects distance (LD) with an increase in pyrolysis temperature. The prepared C/SiCN monoliths showed a record high room temperature (RT) electrical conductivity of 9.6 S/cm for the sample prepared at 1600 °C. The electronic properties of the nanocomposites determined using Hall measurement revealed an anomalous change in the predominant charge carriers from n-type in the samples pyrolyzed at 1100 °C to predominantly p-type in the samples prepared at 1400 and 1600 °C. According to this outcome, tailor-made carbon-rich SiCN polymer-derived ceramics could be developed to produce n-type and p-type semiconductors for development of the next generation of electronic systems for applications in extreme temperature environments.
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BibTeX
@article{adigun2026structure,
title = {{Structure and Electrical Properties of Carbon-Rich Polymer Derived Silicon Carbonitride (SiCN)}},
author = {Oluwole Daniel Adigun and Emmanuel Ricohermoso and Ayodele Abeeb Daniyan and Lasisi Ejibunu Umoru and Emanuel Ionescu},
journal = {Ceramics},
year = {2026},
month = oct,
doi = {10.3390/ceramics5040050},
url = {https://hal.science/hal-05789783v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Structure and Electrical Properties of Carbon-Rich Polymer Derived Silicon Carbonitride (SiCN)
AU - Oluwole Daniel Adigun
AU - Emmanuel Ricohermoso
AU - Ayodele Abeeb Daniyan
AU - Lasisi Ejibunu Umoru
AU - Emanuel Ionescu
PY - 2026
DA - 2026/10/09
JO - Ceramics
DO - 10.3390/ceramics5040050
UR - https://hal.science/hal-05789783v1
AB - This article reports on the structure and electronic properties of carbon-rich polysilazane polymer-derived silicon carbonitride (C/SiCN) corresponding to pyrolysis temperatures between 1100 and 1600 °C in an argon atmosphere. Raman spectroscopy, X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), Scanning Electron Microscopy (SEM) and Hall measurements were used to support the structural and electronic properties characterization of the prepared C/SiCN nanocomposites. A structural analysis using Raman spectroscopy showed the evolution of sp2 hybridized carbon phase that resulted from the growth in the lateral crystallite size (La), average continuous graphene length including tortuosity (Leq) and inter-defects distance (LD) with an increase in pyrolysis temperature. The prepared C/SiCN monoliths showed a record high room temperature (RT) electrical conductivity of 9.6 S/cm for the sample prepared at 1600 °C. The electronic properties of the nanocomposites determined using Hall measurement revealed an anomalous change in the predominant charge carriers from n-type in the samples pyrolyzed at 1100 °C to predominantly p-type in the samples prepared at 1400 and 1600 °C. According to this outcome, tailor-made carbon-rich SiCN polymer-derived ceramics could be developed to produce n-type and p-type semiconductors for development of the next generation of electronic systems for applications in extreme temperature environments.
SN - 2571-6131
ER -