Tunable Molecular Electrodes for Bistable Polarization Screening

• Published in: Small (Weinheim an der Bergstrasse, Germany) Vol. 19; no. 30; pp. e2207799 - n/a
• Main Authors: Spasojevic, Irena, Santiso, José, Caicedo, José Manuel, Catalan, Gustau, Domingo, Neus
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.07.2023
• Subjects: Adsorbates; Barium titanates; BaTiO 3 ferroelectric thin films; Bipolarity; Capacitors; Charge density; chemical electrodes; Coercivity; Electrode polarization; Electrodes; Ferroelectric materials; Ferroelectricity; Graphene; graphene ferroelectric capacitors; molecular functionalization; Nanotechnology; para‐aminobenzoic acid (pABA) molecules; Polarity; polarization screening; Screening; Surface charge; Thickness; Thin films; molecular functionalization; chemical electrodes; BaTiO 3 ferroelectric thin films; para-aminobenzoic acid (pABA) molecules; polarization screening; graphene ferroelectric capacitors
• ISSN: 1613-6810; 1613-6829; 1613-6829
• DOI: 10.1002/smll.202207799

The polar discontinuity at any ferroelectric surface creates a depolarizing field that must be screened for the polarization to be stable. In capacitors, screening is done by the electrodes, while in bare ferroelectric surfaces it is typically accomplished by atmospheric adsorbates. Although chemiso...