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Chemical structures of (a) PEDT/PSS, (b) PEDT-S, and (c) IS-PEDT. (d) S core level spectra for the different conducting polymers.
UPS spectra of ca. thick 6P films on different conducting polymers. The dashed line indicates the rigid shift, for example, of the HOMO level.
(Color online) HIB and as a function of initial substrate (squares for conducting polymers and circles for metals) for (a) (6P) and (b) pentacene. 6P/metal data are from Sm (Ref. 20), Ca (Ref. 21), Mg (Ref. 22), Ag (Ref. 23), and Au (Ref. 3). Pentacene/metal and pentacene/CP (up to ) data are from Ref. 10. Filled squares in (a) correspond to the following CPs (for increasing ): IS-PEDT, PEDT-S, AI4083, and CH8000. The open stars are data for molecules on ; the open squares in (a) are for 6P on CH8000-RT and PED/FP. (Dashed) lines are linear fits to the respective data points.
Comparison of experimental (expt.) and theoretically expected (theor.) stoichiometries of different PEDT/sulfonate ratios obtained from S core level spectra (Fig. 1).
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