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The electrical characteristics of a phthalocyanine heterojunction diode

FAHRETTİN YAKUPHANOGLU1,* , MEHMET KANDAZ2, B. FİLİZ SENKAL3

Affiliation

  1. Fırat University, Department of Physics, 23119 Elazığ/Turkey
  2. Sakarya University, Department of Chemistry, 54140 Esentepe, Sakarya, Turkey
  3. Istanbul Technical University, Department of Chemistry, 34469, Maslak, Istanbul, Turkey

Abstract

The electrical characteristics of nickel(II) phthalocyanine bearing 2’-aminophenylsulfanyl moieties/n-type silicon organic-oninorganic semiconductor diode have been investigated by current-voltage characteristics. The diode indicates a good rectifying behavior. The ideality factor higher than unity of the diode is due to the interface states and series resistance. The ideality factor of the diode indicates that the NiPc appears to interact strongly with the Si inorganic semiconductor. The ideality factor n, barrier height Фb and Rs values of the diode were determined and these electronic parameters vary with temperature. It is evaluated that at lower voltages, the current–voltage characteristics of the diode is controlled thermionic emission, whereas at higher voltages, the current of the diode is controlled by space charge injection limited mechanism..

Keywords

Organic/inorganic junction, Functional phthalocyanine.

Submitted at: June 14, 2009
Accepted at: July 23, 2009

Citation

FAHRETTİN YAKUPHANOGLU, MEHMET KANDAZ, B. FİLİZ SENKAL, The electrical characteristics of a phthalocyanine heterojunction diode, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 7, pp. 1038-1042 (2009)