6–10 Jul 2026
University of the Western Cape
Africa/Johannesburg timezone
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Optical and Electrical Properties of Polyaniline Thin Films for Schottky Diode Radiation Sensors

8 Jul 2026, 14:50
20m
Lecture Hall DL3 (University of the Western Cape)

Lecture Hall DL3

University of the Western Cape

Oral Presentation Track F - Applied Physics Applied Physics

Speaker

Dr Washington Mhike (Tshwane University of Technology)

Description

In this study, the optical and electrical behaviour of polyaniline was studied through Ultraviolet Visible Spectroscopy (UV-Vis) and Current-Voltage (I-V) measurements. The Current-voltage (I-V) measurements showed that a semiconducting diode was successfully formed between polyaniline and silver metal at 1,5M HCl doping. The saturation current Is and ideality factor η were found to be 1,82x10-10 A and 2.0 respectively. From these values, a negative Schottky barrier height was determined to be -1,741 eV. Overall, results obtained in the study present a simple, inexpensive and potentially scalable method for fabricating Schottky diodes suitable for use in radiation sensor elements

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Author

Ms Maria Skosana (Tshwane University of Technology)

Co-authors

Dr Washington Mhike (Tshwane University of Technology) Prof. Mandla Msimanga (Tshwane University of Technology)

Presentation materials