Junction Characteristics System Based on Composite Organic Semiconductors: Polystyrene/Polyaniline Doped by [BMIM] [BF4] Ionic Liquid

Bekhaled Fetouhi; Abdelkader Benabdellah; El Habib Belarbi; Hocine Ilikti; Tayeb Benabdallah

doi:10.3139/113.110341

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Junction Characteristics System Based on Composite Organic Semiconductors: Polystyrene/Polyaniline Doped by [BMIM] [BF₄] Ionic Liquid

Bekhaled Fetouhi , Abdelkader Benabdellah , El Habib Belarbi , Hocine Ilikti und Tayeb Benabdallah

Veröffentlicht/Copyright: 17. November 2014

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Aus der Zeitschrift Tenside Surfactants Detergents Band 51 Heft 6

Abstract

A junction of emeraldine salt (ES [BF₄⁻]) doped by [BMIM] [BF₄] may be preferred over the other junctions due to its low ideality factor and maximum rectification ratio. Schottky barrier diode based on composite of polyaniline (ES [BF₄⁻]) with polystyrene has been created and characterized using aluminium as Schottky contact and argent as an ohmic contact. The observed current–voltage characteristics can be satisfactorily fitted using the modified Schottky equation. Capacitance–voltage (C–V) in reverse bias and current–voltage (I–V) plots indicates a rectification. Various junction parameters were calculated from the temperature dependent I–V and C–V data and discussed. These results indicate that the composite materials have better mechanical strength and diode quality compared to the pure semiconducting polymer.

Kurzfassung

Ein Übergang im Emeraldinesalz (ES [BF₄⁻]), das mit der ionischen Flüssigkeit [BMIM] [BF₄] dotiert ist, könnte gegenüber anderen Übergängen aufgrund seines geringen Idealitätsfaktors und seines maximalen Gleichrichtungsverhältnisses begünstigt sein. Eine Schottky-Diode basierend auf einem Verbund aus Polyanilin (ES [BF₄⁻]) mit Polystyren wurde hergestellt und charakterisiert, wobei Aluminium als Schottky-Kontakt und Silber als Ohmscher Kontakt verwendet wurden. Die beobachteten Strom-Spannungs-Kennlinien konnten zufriedenstellend an die modifizierte Schottky-Gleichung angepasst werden. Der Kapazitäts-Spannungs(C-V)-Plot in Sperrrichtung und der Stron-Spannungs(I-V)-Plot zeigen eine Gleichrichtung. Verschiedene Übergangsparameter wurden aus den temperaturabhängigen I-V- und C-V-Daten berechnet und diskutiert. Die Ergebnisse zeigen an, dass die Verbund-Materialien im Vergleich zum reinen leitfähigem Polymer eine bessere mechanische Festigkeit und Diodenqualität haben.

Key words: Polyaniline; polystyrene; ionic liquids; composite organic conductors; schottky diode

Stichwörter: Polyanilin; Polystyren; ionische Flüssigkeiten; organische Komposit-Halbleiter; Schottky-Diode

* Correspondence address, Mr. Dr. Bekhaled Fetouhi, Synthesis and Catalysis Laboratory, Ibn Khaldoun University of Tiaret, Algeria. E-Mail: k.fetouhi@gmail.com

Dr. Bekhaled Fetouhi was born in February 1976. He completed his Post Graduation in 2001. He obtained his Magister in 2005 from Ibn Khaldun University of Tiaret. (Algeria). At present he is working as a research professor at the Ibn Khaldun University of Tiaret (Algeria). He is preparing his PhD thesis at the University of Paul Verlaine of Metz (France). His area of research is extraction of heavy metals in ionic liquids.

Dr. Abdelkader Benabdellah was born in juin 1979. He completed his Post Graduation in 2003. He completed his Magister in 2006 and his Doctorate in 2013 from University of sciences and technology Oran (Algeria). At present he is working as a research professor at Ibn Khaldun University of Tiaret (Algeria). His area of research is “electrical systems based on conducting polymers and ionic liquids”.

Pr. H. Belarbi was born in 1965. He completed his Post Graduation in 1990. After completing his Ph. D. in 1997 from Montpellier II University France, he worked as Associate Professor in the Department of physics of Ibn Khaldoun University. At present he is working as full Professor and Dean of college of science and technology and materials science, Ibn Khaldoun University, Tiaret, (Algeria). His area of research is “electrical systems based on conducting polymers and ionic liquids”.

Pr. Hocine Ilikti was born in July 1958. He completed his Post Graduation in 1985. After completing his Magister 1992 and Doctorat in 2004 from University of sciences and technology Oran Algeria and University of Claude BERNARD, Lyon France, He is at present working as Professor in University of sciences and technology Oran Algeria. His area of research is “electrocatalytic hydrogenation of electrodes modifying by conductor polymers”.

Dr. Tayeb Benabdallah was born in 1957. He completed his Post Graduation in 1982. He completed his Ph. D. in 1988 at University of AIX-Marseille 2 France under the supervision Dr Dugulile Metti. At present he is working as Professor in University of sciences and technology Oran/Algeria.

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Received: 2013-10-31

Accepted: 2014-08-11

Published Online: 2014-11-17

Published in Print: 2014-11-17

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Artikel in diesem Heft

https://doi.org/10.3139/113.110341

Schlagwörter für diesen Artikel

Polyaniline; polystyrene; ionic liquids; composite organic conductors; schottky diode