Investigation of Gold and Poly(3-Alkylthiophene) interface in top and bottom contact structures

Ultrafast direct electron transfer at organic semiconductor and metal interfaces

“…P3HT is an organic polymer material in which electron orbitals are delocalized through thiophene units, with a band gap of 2 eV. P3HT/gold interfaces are frequently used in molecular electronics ( 31 , 32 ), organic light-emitting diodes ( 33 , 34 ), organic field-effect transistors ( 35 ), and solar materials ( 12 ). When P3HT and gold are in contact, the Fermi level of gold is 0.5 eV above the highest occupied molecular orbital (HOMO) and 1.5 eV below the lowest unoccupied molecular orbital (LUMO) of P3HT ( Fig.…”

Manipulating Organic Semiconductor Morphology with Visible Light

“…We observe an unexpected slight change in the relative absorption of the red light treated film, which may be caused be the large bandwidth of the LED light. To interpret the observed changes in the absorption spectra, we adopt the weakly interacting H‐aggregate model, [ 28,30,31 ] according to which the ratio between the fitted values of the absorption intensities A 1 and A 2 reads $$\[\frac{{{A_1}}}{{{A_2}}} \approx {\left( {\frac{{1 - 0.24W{\rm{/}}{E_p}}}{{1 + 0.073W{\rm{/}}{E_p}}}} \right)^2}\]$$…”

Review—Charge Carrier Mobility of Organic Thin Film Transistor: Intrinsic and Extrinsic Influencing Factors Based on Organic Semiconducting Materials

“…167 For bottom gate-top contact configuration, Au atoms, for example, tend to diffuse into the polymer matrix, thereby resulting in increased intrachain disorder on the polymer chains near the interface. 168 This Au diffusion contributes to the disorder in the molecular arrangement of the organic semiconductor at the metal/ OSM interface, thus affecting the charge transport and current mobility. To avoid this phenomenon from occurring, the configuration of top gate-bottom contact or bottom gate-bottom contact is preferable.…”