"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Semiconducting properties of nanofiber polyaniline organic semiconductor

YU LI1, A. A. AL-GHAMDI2, OMAR A. AL-HARTOMY2,3, FARID EL-TANTAWY4, F. YAKUPHANOGLU5,*

Affiliation

  1. Department of Chemical Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, P.R. China
  2. Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
  3. Department of Physics, Faculty of Science, Tabuk University, Tabuk 71491, Saudia Arabia
  4. Department of Physics, Faculty of Science, Suez Canal University, Ismailia, Egypt
  5. Department of Physics, Faculty of Science, Firat University, Elazig 23169, Turkey

Abstract

The electrical conductivity, optical and microstructure properties of the polyaniline nanofibers have been investigated. The SEM image of the polyaniline shows the formation of nanofibers with diameters of 30-50 nm and lengths of 300-1000 nm. The electrical conductivity results indicate that the polyaniline is an organic semiconductor. The room temperature electrical conductivity of the polyaniline nanofibers was found to be 5.67x10-4 S/cm. The electrical conductivity mechanism of the nanofibers polyaniline varies from the conduction by localized states to the conduction by extended states. In this nanofibers polymer, the current is carried by the movement of polarons partially delocalized on the polymeric structure. The optical band gap of the polymer was found to be 2.57eV of direct allowed transitions. The width of localized states for the polymer was found to be 0.30eV, which is from the conduction band edge to mobility edge..

Keywords

Organic semiconductor, polyaniline, nanofiber, electrical properties.

Citation

YU LI, A. A. AL-GHAMDI, OMAR A. AL-HARTOMY, FARID EL-TANTAWY, F. YAKUPHANOGLU, Semiconducting properties of nanofiber polyaniline organic semiconductor, Optoelectronics and Advanced Materials - Rapid Communications, 6, 1-2, January-February 2012, pp.235-238 (2012).

Submitted at: May 2, 2011

Accepted at: Feb. 20, 2012