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Photoactive self-assembled monolayers for optically switchable organic thin-film transistors
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Device layout and schematics of the three different SAM compositions. (b) UV/Vis spectra of 35 nm pentacene (red) and 30 nm DH6T (blue) evaporated on quartz glass and wavelengths of the laser diodes indicated by vertical lines in the diagram.

Image of FIG. 2.
FIG. 2.

Transfer characteristics for pentacene (a)–(c) and DH6T (d)–(f) in the dark (solid lines) and under illumination with  = 658 nm and 10 mW/cm (dashed lines) in the saturation regime at  = −2 V. Inset in (d) shows a transfer characteristic under illumination with  = 406 nm.

Image of FIG. 3.
FIG. 3.

Output characteristics for pentacene on SAM 3 (a) and DH6T on SAM 2 (b) at V = 0 V and under different illumination intensities with the 658 nm laser.

Image of FIG. 4.
FIG. 4.

Ratio of photocurrent and dark current as a function of time and switching behavior for pentacene on SAM 3 (black) and SAM 1 (green) and DH6T on SAM 2 (red). The resolution of the measurement was 8 ms, the 658 nm laser with an intensity of 30 mW/cm was turned on after approximately 13 s.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Photoactive self-assembled monolayers for optically switchable organic thin-film transistors