The Relationship between Threshold Voltage and Dipolar Character of Self-Assembled Monolayers in Organic Thin-Film Transistors
We report a quantitative study that describes and correlates the threshold voltage of low-voltage organic field-effect transistors with the molecular structure of self-assembled monolayer dielectrics. We have observed that the component of the dipole moment of such self-assembled molecules perpendic...
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| Veröffentlicht in: | Journal of the American Chemical Society 2012-08, Vol.134 (30), p.12648-12652 |
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| container_end_page | 12652 |
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| container_issue | 30 |
| container_start_page | 12648 |
| container_title | Journal of the American Chemical Society |
| container_volume | 134 |
| creator | Salinas, Michael Jäger, Christof M Amin, Atefeh Y Dral, Pavlo O Meyer-Friedrichsen, Timo Hirsch, Andreas Clark, Timothy Halik, Marcus |
| description | We report a quantitative study that describes and correlates the threshold voltage of low-voltage organic field-effect transistors with the molecular structure of self-assembled monolayer dielectrics. We have observed that the component of the dipole moment of such self-assembled molecules perpendicular to the surface correlates linearly with the threshold voltage shift in devices. The model was validated using three different organic semiconductors (pentacene, α,α′-dihexylsexithiophene, and fullerene–C60) on six different self-assembled monolayers. The correlation found can help optimize future devices, by tuning the dipole moments of the molecules that constitute the self-assembled monolayer. |
| doi_str_mv | 10.1021/ja303807u |
| format | Article |
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Am. Chem. Soc</addtitle><date>2012-08-01</date><risdate>2012</risdate><volume>134</volume><issue>30</issue><spage>12648</spage><epage>12652</epage><pages>12648-12652</pages><issn>0002-7863</issn><eissn>1520-5126</eissn><abstract>We report a quantitative study that describes and correlates the threshold voltage of low-voltage organic field-effect transistors with the molecular structure of self-assembled monolayer dielectrics. We have observed that the component of the dipole moment of such self-assembled molecules perpendicular to the surface correlates linearly with the threshold voltage shift in devices. The model was validated using three different organic semiconductors (pentacene, α,α′-dihexylsexithiophene, and fullerene–C60) on six different self-assembled monolayers. 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| title | The Relationship between Threshold Voltage and Dipolar Character of Self-Assembled Monolayers in Organic Thin-Film Transistors |
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