Electrochemical Impedance Spectroscopy of a novel ZnA-CA (Zinc Acetate_Citric Acid) Supramolecular Metallogel

TL;DR

This paper investigates the charge transport properties of a novel ZnA-CA supramolecular metallogel using electrochemical impedance spectroscopy, revealing insights into its potential for electronic applications.

Contribution

It introduces a new zinc-based supramolecular gel and applies impedance spectroscopy to analyze its charge mobility, providing comparative data with diode I-V measurements.

Findings

Impedance spectroscopy effectively characterizes charge transport in the gel.

Mobility values from impedance and I-V measurements show good correlation.

The gel exhibits promising semiconducting properties for electronic applications.

Abstract

Supramolecular gels are formed by the self-assembly of low molecular weight organic gelators with their solvent molecules. These are emerging novel materials with good semiconducting and light emitting properties with application potential as hole and electron transport layers in organic solar cells, LEDs, stimulus-responsive smart semiconducting materials, thin film transistors (TFT) etc. In this context charge transport and mobility of charge carriers in these materials assume extreme significance. In the study, Electrochemical impedance spectroscopy, which is a non-destructive technique, is used to analyze frequency dependent electrochemical impedance values, of a novel meallogel, ZnA_CA (Zinc Acetate_Citric Acid), and used to evaluate the charge properties and mobility. A comparative study of mobility values obtained from diode I-V characteristics of the gel and Impedance measurements has also been made.