INVESTIGADORES
GOLMAR Federico
artículos
Título:
Non-conventional metallic electrodes for organic field-effect transistors
Autor/es:
F. GOLMAR; M. GOBBI; R. LLOPIS; P. STOLIAR; F. CASANOVA; L. HUESO
Revista:
ORGANIC ELECTRONICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 13 p. 2301 - 2306
ISSN:
1566-1199
Resumen:
We study micrometer-sized organic field-effect transistors with either Pd or NiFe metallic electrodes. Neither of these materials is commonly used in organic electronics applications, but they could prove to be particularly advantageous in certain niche applications such as organic spintronics. Using organic semiconductors with different carrier transport characteristics as active layer, namely n-type C60 fullerene and p-type Pentacene, we prove that Pd (NiFe) is a very suitable electrode for p- (n-) type semiconductors. In particular, we characterized devices with channel lengths in the order of the micrometer, a distance which has allowed us to evaluate the electronic behavior in a regime where the interfacial problems become predominant and it is possible to reach elevated longitudinal electric fields. Our experimental results agree well with a simple model based on rigid energy levels.
