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Electrical characterization of metal/pentacene contacts
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10.1063/1.2424396
/content/aip/journal/jap/101/1/10.1063/1.2424396
http://aip.metastore.ingenta.com/content/aip/journal/jap/101/1/10.1063/1.2424396

Figures

Image of FIG. 1.
FIG. 1.

(a) Contact area dependence of current through a Au/pentacene/ITO heterostructure. The inset is the geometry of the device. (b) Film thickness dependence of current through a Au/pentacene/ITO device.

Image of FIG. 2.
FIG. 2.

(a) characteristics of a symmetric Au/pentacene/Au structure. The inset is the geometry of the device. (b) Semilog plot of characteristics of symmetric Ag, Au, and Pt devices (pentacene in all devices). The inset is a schematic of possible physical differences between the top and bottom contacts.

Image of FIG. 3.
FIG. 3.

(a) characteristics of a Au/pentacene/ITO device. The inset is a geometry of the device. (b) Semilog plot of characteristics of the nonsymmetric Ag, Au, and Pt devices (pentacene and contact in all devices).

Image of FIG. 4.
FIG. 4.

Arrhenius plots of reverse current density (at reverse ) of Ag/, Au/, and Pt/pentacene/ITO devices in the thermally activated regime.

Image of FIG. 5.
FIG. 5.

Logarithmic forward characteristics of a Au/pentacene/ITO device for different temperatures.

Image of FIG. 6.
FIG. 6.

Comparison of numerical model results and (room temperature) experimental data for the symmetric Ag, Au, and Pt devices with a pentacene layer thickness of .

Image of FIG. 7.
FIG. 7.

Schottky barrier heights vs metal work function for the metal/pentacene contacts investigated.

Image of FIG. 8.
FIG. 8.

Schematic energy diagrams for the various interfaces between pentacene and Pt, Au, and Ag. The injection barrier heights derive from our activation energy data.

Image of FIG. 9.
FIG. 9.

Interface dipoles vs work function for metal/pentacene interfaces.

Tables

Generic image for table
Table I.

Values of contact barrier heights determined from activation energy of reverse current, and values obtained by the difference between metal work function and HOMO level of pentacene . The interface dipoles formed at metal/pentacene contacts are calculated from these values.

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/content/aip/journal/jap/101/1/10.1063/1.2424396
2007-01-12
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrical characterization of metal/pentacene contacts
http://aip.metastore.ingenta.com/content/aip/journal/jap/101/1/10.1063/1.2424396
10.1063/1.2424396
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