Electrical Properties of Lead Phthalocyanine Films

• Authors: N. Abd El-Rehim , A. El-Samahy
• Languages of publication: EN

Abstracts

EN

Current density-voltage characteristics have been obtained from thin films of lead phthalocyanine particles dispersed in a polymer binder when sandwiched between ohmic gold and blocking aluminium electrodes. At low voltages, the current in the forward direction shows Schottky diode behaviour. The diode parameters are evaluated using the model of Cheung and Cheung. Barrier heights and widths are determined as a function of applied voltage. A number of parameters is evaluated on the basis of the theory of space-charge-limited conduction, and the following values are obtained: p_{0} = 8.5 × 10^{18} m^{-3}, concentration of the traps per unit energy range at the valence band P_{0} ≈ 2.5 × 10^{44} J^{-1}m^{-3}, temperature parameter of trapping distribution T_{c} ≈ 500 K and total trapping concentration, N_{t} ≈ 1.7 × 10^{24} m^{-3}.

Keywords

EN

72.20.-i

Discipline

• 72.20.-i: Conductivity phenomena in semiconductors and insulators(see also 66.70.-f Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1996
• Volume: 90
• Issue: 3
• Pages: 557-564

Dates

published

1996-09

received

1995-10-27

(unknown)

1996-04-23

Contributors

author

N. Abd El-Rehim

• Physics Department, Faculty of Science, Alexandria University Alexandria, Egypt

author

A. El-Samahy

• Physics Department, Faculty of Science, Alexandria University Alexandria, Egypt

Identifiers

DOI

10.12693/APhysPolA.90.557