Hostname: page-component-65f69f4695-thqfx Total loading time: 0 Render date: 2025-06-29T14:58:47.103Z Has data issue: false hasContentIssue false
  • English
  • Français

Variable Temperature Capacitance-Voltage Measurements to Investigate the Density of Localized Trapping Levels in Organic Semiconductors

Published online by Cambridge University Press:  26 February 2011

Naser Sedghi ,
David Donaghy ,
Munira Raja ,
Samer Badriya ,
Simon J. Higgins  and
Bill Eccleston
Naser Sedghi
Affiliation:
nsed@liv.ac.uk, The University of Liverpool, Electrical Engineering and Electronics, Brownlow Hill, Liverpool, N/A, L26 1YQ, United Kingdom, +44 151 7944608
David Donaghy
Affiliation:
d.donaghy@liv.ac.uk, The University of Liverpool, Department of Electrical Engineering and Electronics, United Kingdom
Munira Raja
Affiliation:
m.raja@liv.ac.uk, The University of Liverpool, Department of Electrical Engineering and Electronics, United Kingdom
Samer Badriya
Affiliation:
sambadriya@hotmail.com, The University of Liverpool, Department of Chemistry, United Kingdom
Simon J. Higgins
Affiliation:
shiggins@liv.ac.uk, The University of Liverpool, Department of Chemistry, United Kingdom
Bill Eccleston
Affiliation:
beccle@liv.ac.uk, The University of Liverpool, Department of Electrical Engineering and Electronics, United Kingdom
Get access

Abstract

We have approximated the tail of the Gaussian distribution of states of organic semiconduc-tors with an exponential function. We have used this approach to calculate the carrier concentra-tion in organic materials, and subsequently the charge distribution in the accumulation region of a field effect device and the space-charge capacitance in accumulation mode. Small signal high frequency capacitance-voltage measurements performed at various temperatures show good agreement with this model and the characteristic temperature of the exponential function has been estimated from these measurements based on the theory developed.

Keywords

organicpolymerelectrical properties

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 905: Symposium DD – Materials for Transparent Electronics , 2005 , 0905-DD06-02
Copyright
Copyright © Materials Research Society 2006

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

[1] Arkhipov, V. I., Emelianova, E. V., and Bässler, H., Philos. Mag. B, 81 (2001), 985.Google Scholar
[2] Schonherr, G., Bässler, H., and Silver, M., J. Phys.-Paris, 42 (1981), 111.Google Scholar
[3] Hartenstein, B. and Bässler, H., J. Non-Cryst. Solids, 190 (1995), 112.Google Scholar
[4] Jarrett, C. P, Friend, R. H., Brown, A. R., and de Leeuw, D. M., J. Appl. Phys., 77 (1995), 6289.Google Scholar
[5] Raja, M., Lloyd, G. C. R., Sedghi, N., and Eccleston, W., J. Appl. Phys., 92 (2002), 1441.Google Scholar
[6] Roichman, Y., Preezant, Y., and Tessler, N., Phys. Status Solidi A, 201 (2004), 1246.Google Scholar
[7] Matters, M., de Leeuw, D. M., Vissenberg, M. J. C. M., Hart, C. M., Herwig, P. T., Geuns, T., Mutsaers, C. M. J., and Drurt, C. J., Opt. Mater., 12 (1999), 189.Google Scholar