The Impact of Molecular Polarization on the Electronic Properties of Molecular Semiconductors

TL;DR

This paper investigates how molecular polarization, modeled as a quantum Frenkel exciton field, influences the electronic properties and charge dynamics in molecular semiconductors like pentacene.

Contribution

It introduces a quantum field approach to account for molecular polarization effects on charge carriers in molecular semiconductors.

Findings

Polarization cloud affects charge mobility

Electronic polaron modifies charge transport dynamics

Quantum Frenkel exciton model captures polarization effects

Abstract

In a molecular semiconductor, the carrier is dressed with a polarization cloud that we treat as a quantum field of Frenkel excitons coupled to it. The consequences of the existence of this electronic polaron on the dynamics of an extra charge in a material like pentacene can thus be evaluated.