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Air-stable ambipolar organic transistors
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Absorption spectra of a Ni(dpedt)(dmit) film spin coated on quartz substrate from a solution. Inset: Molecular structure of the Ni(dpedt)(dmit) derivative.

Image of FIG. 2.
FIG. 2.

(Color online) Output characteristics of a Ni(dpedt)(dmit) transistor with channel length and width of and , respectively. Electrical characterization was performed in ambient conditions at room temperature. We note that the electrical characteristics remain the same even after exposure of the device to ambient atmosphere (shelve storage) for a period of .

Image of FIG. 3.
FIG. 3.

(Color online) Hole and electron mobilities calculated in the saturation regime vs exposure time of the Ni(dpedt)(dmit) transistor to ambient air and light. Relative humidity of the ambient air was measured at approximately 45%.

Image of FIG. 4.
FIG. 4.

(Color online) LUMO energy levels of the various organic molecules studied. The red line located at an energy level of indicates the calculated redox potential ( vs SCE) for water reduction at a (Ref. 28). The green arrow indicates the LUMO energy range for unstable -channel molecules toward ambient air. The blue arrow indicates the LUMO energy range for air-stable -channel molecules. As can be seen a good agreement between theoretical prediction and the experimental results is observed.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Air-stable ambipolar organic transistors