title: Surface potential domains on lamellar P3OT structures.
abstract: In this work the electrostatic properties of poly(3-octylthiophene) thin films have been studied on a nanometer scale by means of electrostatic force microscopy and Kelvin probe microscopy (KPM). The KPM images reveal that different surface contact potential domains coexist on the polymer surface. This result, together with additional capacitance measurements, indicates that the potential domains are related to the existence of dipoles due to different molecular arrangements. Finally, capacitance measurements as a function of the tip-sample bias voltage show that in all regions large band bending effects take place.
authors: Departamento Física, Facultad de Química (Campus Espinardo), Universidad de Murcia, E-30100 Murcia, Spain.
authors: B
authors: B
authors: Pérez-García
authors: J
authors: J
authors: Abad
authors: A
authors: A
authors: Urbina
authors: J
authors: J
authors: Colchero
authors: E
authors: E
authors: Palacios-Lidón