Influence of organic semiconductor morphology, structure and processability on organic field-effect transistors performance
- Autores: Antonio del Campo García
- Directores de la Tesis: Marta Mas Torrent (dir. tes.)
- Lectura: En la Universitat Autònoma de Barcelona ( España ) en 2018
- Idioma: español
- Tribunal Calificador de la Tesis: Dolores Velasco Castrillo (presid.), Mariano Campoy Quiles (secret.), Stefano Casalini (voc.)
- Programa de doctorado: Programa de Doctorado en Ciencia de Materiales por la Universidad Autónoma de Barcelona
- Materias:
- Enlaces
- Tesis en acceso abierto en: TESEO
- Resumen
Herein, we have studied how the processing of organic semiconductors can affect their morphology and crystal structure. p-Type and n-type organic semiconductors have been employed as active layers in Organic Field-Effect Transistors (OFETs). More in detail, we have performed studies with different organic semiconductors and fabricated transistors based on them by solution (drop casting and bar-assisted meniscus shearing) and by evaporation. The purpose of the work carried out has been elucidating the correlation of the molecular structure, crystal packing and thin film morphology with the electrical properties of the organic semiconductor. Further, aiming at enhancing the performance and stability of the devices, the organic semiconductors used in this thesis were blended with polymer binders. In addition, the effect of the polymer binder has been studied in detail by comparing OFETs based on thin-films of the pristine semiconductor with OFETs based on thin-films of the semiconductor blended with polymers. Finally, spray printing has been explored as technique for depositing organic contacts based on the organic metal tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) and also for forming single crystals of organic semiconductors.
