Surface dipole engineering for conducting polymers |
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| Authors: | William E McClain Peter R Florence Andrew Shu Antoine Kahn Jeffrey Schwartz |
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| Affiliation: | 1. Department of Chemistry, Princeton University, Princeton, NJ 08544, USA;2. Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA |
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| Abstract: | The first example of systematic control of the work function of a conducting polymer is illustrated for PEDOT:PSS. A nanometer-thick film of TiO2 is formed on the PEDOT:PSS surface and forms an adhesion layer to bond phosphonic acids to the polymer; the work function of the PEDOT:PSS (ΦPEDOT:PSS) is adjusted by choice of phosphonic acid over a range of approximately 0.8 eV, and ΔΦPEDOT:PSS correlates strongly with the calculated gas-phase dipole moments of the phosphonates. |
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