XIE, Kaili; GLASSER, Alizée; SHINDE, Shekhar; ZHANG, Zaicheng; RAMPNOUX, Jean-Michel; MAALI, Abdelhamid; CLOUTET, Eric; HADZIIOANNOU, Georges; KELLAY, Hamid

doi:10.1002/adfm.202009039

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XIE, Kaili
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

GLASSER, Alizée
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

SHINDE, Shekhar
Team 4 LCPO : Polymer Materials for Electronic, Energy, Information and Communication Technologies

Langue

Article de revue

Ce document a été publié dans

Advanced Functional Materials. 2021

Wiley

Date de soutenance

2021

Résumé en anglais

Polymer based conductive and transparent thin films are an important class of functional materials at the heart of flexible organic electronic devices. These flexible films are prone to degradation and to mechanical instability leading to the formation of blisters, wrinkles and cracks. This is detrimental to their use especially in the case of multilayer devices. Here, we show that a simple water or solvent drop deposited on such films gives rise to a buckling instability and the formation of several folds due to the tendency of these films to swell in contact with the solvent. A phase diagram of the instability portraying its domain of existence, and thus the means to inhibit it, is proposed. By depositing drops on such films and observing the instability, material parameters such as the elastic modulus of the thin films or their energy of adhesion to the substrate can be estimated reliably. Further, the instability can be harnessed to pattern surfaces at low cost giving rise to percolated and more conductive pathways in the conductive polymer films under scrutiny.< Réduire

Mots clés en anglais

conductive polymer

flexible thin films

wrinkling instability

delamination and adhesion

conductive polymer

DOI

http://dx.doi.org/10.1002/adfm.202009039

Project ANR

Transistors multimodaux sensibles aux ions à polymères ambivalents pour biocapteurs hybrides - ANR-17-CE09-0015

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798