1. Unusual electromechanical response in rubrene single crystals
- Author
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Luca Muccioli, Guillaume Wantz, Yoann Olivier, Alejandro L. Briseno, Micaela Matta, Sai Manoj Gali, Damien Thuau, Isabelle Dufour, Cédric Ayela, Marco José Pereira, DIPARTIMENTO DI CHIMICA 'GIACOMO CIAMICIAN', DIPARTIMENTO DI CHIMICA INDUSTRIALE 'TOSO MONTANARI', Da definire, AREA MIN. 03 - Scienze chimiche, Matta, Micaela, Pereira, Marco José, Gali, Sai Manoj, Thuau, Damien, Olivier, Yoann, Briseno, Alejandro, Dufour, Isabelle, Ayela, Cedric, Wantz, Guillaume, Muccioli, Luca, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Lab Chem Novel Mat, Université de Mons (UMons), Laboratoire de Chimie des Polymères Organiques (LCPO), and Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Ecole Nationale Supérieure de Chimie, de Biologie et de Physique (ENSCBP)-Université de Bordeaux (UB)-Institut de Chimie du CNRS (INC)
- Subjects
Work (thermodynamics) ,Materials science ,Stacking ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,01 natural sciences ,Crystal ,stress ,chemistry.chemical_compound ,strain ,General Materials Science ,[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics ,Electrical and Electronic Engineering ,Rubrene ,ComputingMilieux_MISCELLANEOUS ,Process Chemistry and Technology ,Intermolecular force ,stress, strain, transfer integral ,021001 nanoscience & nanotechnology ,0104 chemical sciences ,transfer integral ,Organic semiconductor ,chemistry ,Mechanics of Materials ,Chemical physics ,Modulation ,Deformation (engineering) ,0210 nano-technology - Abstract
none 10 si Organic semiconductors are intensively studied as promising materials for the realisation of low-cost flexible electronic devices. The flexibility requirement implies either performance stability towards deformation, or conversely, detectable response to the deformation itself. The knowledge of the electromechanical response of organic semiconductors to external stresses is therefore not only interesting from a fundamental point of view, but also necessary for the development of real world applications. To this end, in this work we predict and measure the variation of charge carrier mobility in rubrene single crystals as a function of mechanical strain, applied selectively along the crystal axes. We find that strain induces simultaneous mobility changes along all three axes, and that in some cases the response is higher along directions orthogonal to the mechanical deformation. These variations cannot be explained by the modulation of intermolecular distances, but only by a more complex molecular reorganisation, which is particularly enhanced, in terms of response, by π-stacking and herringbone stacking. This microscopic knowledge of the relation between structural and mobility variations is essential for the interpretation of electromechanical measurements for crystalline organic semiconductors, and for the rational design of electronic devices. mixed Matta, Micaela; Pereira, Marco José; Gali, Sai Manoj; Thuau, Damien; Olivier, Yoann; Briseno, Alejandro; Dufour, Isabelle; Ayela, Cedric; Wantz, Guillaume; Muccioli, Luca Matta, Micaela; Pereira, Marco José; Gali, Sai Manoj; Thuau, Damien; Olivier, Yoann; Briseno, Alejandro; Dufour, Isabelle; Ayela, Cedric; Wantz, Guillaume; Muccioli, Luca
- Published
- 2018
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