Organic light-emitting transistors using concentric source/drain electrodes on a molecular adhesion layer
2006; American Institute of Physics; Volume: 88; Issue: 16 Linguagem: Inglês
10.1063/1.2193468
ISSN1520-8842
AutoresClara Santato, Fabio Cicoira, Piero Cosseddu, Annalisa Bonfiglio, P. Bellutti, Michele Muccini, R. Zamboni, Federico Rosei, Arnaud Mantoux, P. Doppelt,
Tópico(s)Organic Light-Emitting Diodes Research
ResumoBottom-contact tetracene light-emitting transistors employing a mercaptosilane derivative self-assembled monolayer as adhesive between gold concentric interdigitated source/drain electrodes and SiO2 gate dielectric are described. Devices that employ the mercaptosilane adhesive have a higher mobility and electroluminescence compared to those employing a standard metallic adhesive. This is rationalized in terms of the large, well interconnected grains found in tetracene films deposited on substrates using the mercaptosilane adhesive. Our work represents a step forward in the understanding of physical processes at semiconductor/metal and semiconductor/dielectric interfaces in organic devices.
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