Year: 2023
Type: article
Abstract: We present a spectrum investigation of the behavior of dissociated polarons under high electric fields in conjugated polymers. The study employs the Su-Schrieffer-Heeger model along with nonadiabatic molecular dynamics and frequency-domain analysis methods to analyze the Bloch-like oscillations. It is found that the fundamental frequencies of the current density agree well with the theoretical Bloch frequencies of the perfect crystals. The electron-phonon coupling is a key factor in inducing the deviation between the Bloch-like oscillation behavior in conjugated polymers and that in perfect superlattices. Moreover, the increase in lattice thermal fluctuation is not conducive to the maintenance of Bloch-like oscillation behavior in conjugated polymers.
Source: ACS Omega
Author: Sutao Sun
Institution: Hebei GEO University
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,685
OpenAlex ID: W4387696167