https://doi.org/10.1140/epjb/s10051-023-00604-0
Regular Article – Solid State and Materials
Temperature effects on the dynamics of oppositely charged bipolarons scattering in conjugated polymers
1
Institute for Nationalities Attached to Hebei Normal University, 050091, Shijiazhuang, China
2
Department of Physics, Xingtai University, 054001, Xingtai, China
3
College of Physics, Hebei Advanced Thin Films Laboratory, Hebei Normal University, 050024, Shijiazhuang, China
4
Hebei Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, 050018, Shijiazhuang, China
d
562472321@qq.com
e
dibing@hebtu.edu.cn
Received:
14
July
2023
Accepted:
5
October
2023
Published online:
31
October
2023
Within a tight-binding electron–phonon interaction model modified to include temperature effects, the dynamics of two oppositely charged bipolarons scattering in conjugated polymers are investigated using a nonadiabatic evolution method. In this paper, the temperature effects are introduced by the Langevin equation of motion. In order to further understand the photoelectric conversion mechanism in organic light emitting devices, the yields of the luminescent products are studied. It is found that temperature should promote the formation of luminescent element excitations under relatively weak and strong electric fields. In addition, temperature effects can affect the time of bipolarons recombination. With the increase in temperature, the time of bipolarons recombination increases. The results can provide some research ideas for designing organic light-emitting devices with high electroluminescence efficiency.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
