Work

EIS measurements in molecular electronics

Year: 2026

Type: review

Abstract: Although electrochemical impedance spectroscopy (EIS) has already demonstrated its reliability in electrochemistry and organic semiconductors as a tool for tracking charge‐carrier transport, its potential in molecular electronics has not yet been fully realized. In this emerging field, where DC-based measurements often obscure key physical processes, EIS provides an indispensable frequency-resolved perspective capable of disentangling interfacial, dielectric, and molecular contributions. The aim of this review is to revisit prior studies and highlight how impedance measurements reveal information that remains hidden or ambiguous in static J–V analysis—ranging from contact resistance and dielectric response to polarization dynamics and environment-induced effects. By surveying the current state of the art, we underscore the unique diagnostic power of EIS and outline the challenges that must be overcome for it to become a standard metrological tool in molecular electronics.

Source: Current Opinion in Electrochemistry

DOI: 10.1016/j.coelec.2026.101830

Authors: Meiling Su, Kieu Ngo, Jean-Christophe Lacroix, Mireille Turmine, Vincent Vivier

Institutions: Centre National de la Recherche Scientifique, Sorbonne Université, Laboratoire de Réactivité de Surface, Université Paris Cité, Interfaces Traitements Organisation et Dynamique des Systèmes

Language: English

Topic: Molecular Junctions and Nanostructures

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,630

Funders: Agence Nationale de la Recherche, Centre National de la Recherche Scientifique