Controlling charge injection in organic electronic devices using self-assembled monolayers
- 15 December 1997
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 71 (24) , 3528-3530
- https://doi.org/10.1063/1.120381
Abstract
We demonstrate control and improvement of charge injection in organic electronic devices by utilizing self-assembledmonolayers(SAMs) to manipulate the Schottky energy barrier between a metal electrode and the organic electronic material. Hole injection from Cuelectrodes into the electroluminescent conjugated polymer poly[2-methoxy,5-( 2 ′ -ethyl-hexyloxy)-1,4-phenylene vinylene] was varied by using two conjugated-thiol based SAMs. The chemically modified electrodes were incorporated in organic diode structures and changes in the metal/polymer Schottky energy barriers and current–voltage characteristics were measured. Decreasing (increasing) the Schottky energy barrier improves (degrades) charge injection into the polymer.Keywords
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