Electrical Properties of Amorphous Carbon Thin Films Prepared from Natural Precursor of Camphor

A simple thermal chemical vapor deposition method is employed for the deposition of amorphous carbon thin films by natural precursor camphor oil onto the glass substrates and the iodine doping process. In this work, we have studied the effect of iodine doping on the evolution of electrical properties and the optical and structural properties of amorphous carbon thin films. The amorphous carbon thin films were characterized by using Raman spectroscopy, UV-VIS-NIR spectroscopy, current-voltage (I-V) measurement, Fourier transform infrared (FTIR) and FESEM. The I-V study reveals that the electrical conductivity was increased with the iodine doping. The iodine doped thin films induced graphitization by decreasing the optical band gap. Raman and FTIR result indicates that amorphous carbon thin films consist of a mixture of sp2 and sp3 bonded carbon atoms. The FESEM shows the amorphous nature of the thin films.

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Effect of nitrogen concentrations on electrical properties of amorphous carbon thin films by using palm oil precursor

RSM 2013 IEEE Regional Symposium on Micro and Nanoelectronics ◽

10.1109/rsm.2013.6706533 ◽

2013 ◽

Author(s):

A. Ishak ◽

K. Dayana ◽

M. Rusop

Keyword(s):

Thin Films ◽

Electrical Properties ◽

Amorphous Carbon ◽

Palm Oil ◽

Nitrogen Concentrations ◽

Carbon Thin Films

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Effect of low negative bias on electrical properties of nitrogen doped amorphous carbon thin films using bias-assisted pyrolysis-CVD

2013 International Conference on Electrical, Electronics and System Engineering (ICEESE) ◽

10.1109/iceese.2013.6895032 ◽

2013 ◽

Author(s):

A. Ishak ◽

M. Rusop

Keyword(s):

Thin Films ◽

Electrical Properties ◽

Amorphous Carbon ◽

Negative Bias ◽

Nitrogen Doped ◽

Carbon Thin Films

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Electron-diffraction studies of amorphous carbon thin films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100151337 ◽

1993 ◽

Vol 51 ◽

pp. 1100-1101

Author(s):

David A. Muller

Keyword(s):

Thin Films ◽

Electron Diffraction ◽

Amorphous Carbon ◽

Glassy Carbon ◽

Spherical Structure ◽

Local Ordering ◽

Carbon Arc ◽

Similar Appearance ◽

Carbon Thin Films ◽

Large Spherical

The sp2 rich amorphous carbons have a wide variety of microstructures ranging from flat sheetlike structures such as glassy carbon to highly curved materials having similar local ordering to the fullerenes. These differences are most apparent in the region of the graphite (0002) reflection of the energy filtered diffracted intensity obtained from these materials (Fig. 1). All these materials consist mainly of threefold coordinated atoms. This accounts for their similar appearance above 0.8 Å-1. The fullerene curves (b,c) show a string of peaks at distance scales corresponding to the packing of the large spherical and oblate molecules. The beam damaged C60 (c) shows an evolution to the sp2 amorphous carbons as the spherical structure is destroyed although the (220) reflection in fee fcc at 0.2 Å-1 does not disappear completely. This 0.2 Å-1 peak is present in the 1960 data of Kakinoki et. al. who grew films in a carbon arc under conditions similar to those needed to form fullerene rich soots.

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