Controlling charge injection in organic electronic devices using self-assembled monolayers

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.120381· OSTI ID:550439

Campbell, I H; Kress, J D; Martin, R L; Smith, D L ^[1]; Barashkov, N N; Ferraris, J P ^[2]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. The University of Texas at Dallas, Richardson, Texas 75083 (United States)

We demonstrate control and improvement of charge injection in organic electronic devices by utilizing self-assembled monolayers (SAMs) to manipulate the Schottky energy barrier between a metal electrode and the organic electronic material. Hole injection from Cu electrodes into the electroluminescent conjugated polymer poly[2-methoxy,5-(2{sup {prime}}-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{endash}voltage characteristics were measured. Decreasing (increasing) the Schottky energy barrier improves (degrades) charge injection into the polymer. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 550439
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 24 Vol. 71; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CHARGE-COUPLED DEVICES
COPPER
ELECTRIC CHARGES
ELECTRODES
INJECTION
LAYERS
ORGANIC COMPOUNDS
POLYMERS
SCHOTTKY BARRIER DIODES