Organic electronic devices could benefit from electrodes with tunable work functions.  In this work, modification of work function is achieved by deposition of thin films of carbon nanotubes on Pt, Ni, and Au via aerosol jet printing.  We show that the resulting work function exhibits dependence on the thickness of the CNT layer and the underlying metal. Ambient Kelvin probe was employed to characterize the effective work function.  The thickness of the printed films were determined by surface profilometer.  By modifying the work function, the metal/organic semiconductor interface is also altered.  We evaluate the effect of this change on device performance by using the CNT-coated electrodes to fabricate Schottky photodetectors, employing a poly(3-hexylthiophene):C61-butyric acid methyl ester (P3HT:PC<sub>61</sub>BM) composite.

Work function modification of various electrodes by deposition of carbon nanotubes via aerosol jet printing

249th National Meeting (2015)

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