Effect of surface localized states on conductivity in an organic crystal
- 14 March 2005
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 97 (6) , 063711
- https://doi.org/10.1063/1.1866478
Abstract
Current-voltage characteristics of perylene crystals have been measured at different temperatures both with coplanar Au contacts and in the sandwich configuration in between an indium tin oxide bottom contact and a Au top contact. The voltage and temperature dependences of the current turned out to be very different in coplanar and sandwich structures. A strong increase of the conductivity in coplanar contact structures was observed upon oxygen-plasma treatment, indicating a strong influence of surface states on electronic properties of organic crystals. The effect of crystal-growth conditions on electronic parameters of the crystal is discussed. The obtained experimental data are interpreted in terms of dopant-assisted charge injection across a metal-organics interface.This publication has 8 references indexed in Scilit:
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