Publication result detail

Noise of carbon/graphite thick conducting films

SEDLÁKOVÁ, V., BRÜSTLOVÁ, J., ŠIKULA, J., HLÁVKA, J., COCKER, J., ADAMS, K., GREENHILL, D.

Original Title

Noise of carbon/graphite thick conducting films

English Title

Noise of carbon/graphite thick conducting films

Type

Paper in proceedings (conference paper)

Original Abstract

Thick conducting films based on carbon/graphite particles in polymer vehicle are characterised by noise measurements. The samples structure consists of conducting particles and inter-particle layers with semiconductor conductivity. The sources of fluctuations are both in the conducting particles volume and in contact region between carbon/graphite particles. The low frequency noise spectral density is 1/fa type and it is proportional to the square of the current, voltage or electric field intensity. The frequency factor a is very near to 1. We suppose, that there is a fundamental 1/f noise component as a result of mobility fluctuation. Additional is excess 1/f noise component generated at the interfaces between conducting particles and polymer vehicle. The main problem is if 1/f fluctuation is caused by fluctuation of a number of carriers acting in transport or by mobility fluctuation due to scattering process.

English abstract

Thick conducting films based on carbon/graphite particles in polymer vehicle are characterised by noise measurements. The samples structure consists of conducting particles and inter-particle layers with semiconductor conductivity. The sources of fluctuations are both in the conducting particles volume and in contact region between carbon/graphite particles. The low frequency noise spectral density is 1/fa type and it is proportional to the square of the current, voltage or electric field intensity. The frequency factor a is very near to 1. We suppose, that there is a fundamental 1/f noise component as a result of mobility fluctuation. Additional is excess 1/f noise component generated at the interfaces between conducting particles and polymer vehicle. The main problem is if 1/f fluctuation is caused by fluctuation of a number of carriers acting in transport or by mobility fluctuation due to scattering process.

Key words in English

Noise, Thick films

Authors

SEDLÁKOVÁ, V., BRÜSTLOVÁ, J., ŠIKULA, J., HLÁVKA, J., COCKER, J., ADAMS, K., GREENHILL, D.

Released

01.01.2003

Publisher

CNRL s.r.o.

Location

Czech Republic

ISBN

80-239-1005-1

Book

Proceedings of the 17th International Conference Noise and Fluctuations

Pages from

201

Pages count

4

BibTex

@inproceedings{BUT9226,
  author="Vlasta {Sedláková} and Jitka {Brüstlová} and Josef {Šikula} and Jan {Hlávka} and J. {Cocker} and K. {Adams} and D. {Greenhill}",
  title="Noise of carbon/graphite thick conducting films",
  booktitle="Proceedings of the 17th International Conference Noise and Fluctuations",
  year="2003",
  pages="4",
  publisher="CNRL s.r.o.",
  address="Czech Republic",
  isbn="80-239-1005-1"
}