scispace - formally typeset
Search or ask a question
Topic

Bipolaron

About: Bipolaron is a research topic. Over the lifetime, 1335 publications have been published within this topic receiving 29154 citations. The topic is also known as: bipolarons.


Papers
More filters
Journal Article
TL;DR: In this paper, the behavior of electroluminescent polymers under applied electric fields was studied by using the tight binding model of electron lattice coupling and solving the real tmie Newton dynamical equation.
Abstract: The behaviors of the electroluminescent polymers under applied electric fields were studied by using the tight binding model of electron lattice coupling and solving the real tmie Newton dynamical equation. It was discovered that (1) the extra electron and hole injected by the applied electric field make the lattice relaxation, and bipolaron excitons are formed. (2) there exists a critical electric field. When an applied field is equal to or larger than the critical field, the bipolaron exciton will be dissociated into positive and negative polarons, leading to photoluminescence quenching. The result is consistent with the relevant experiments, and it also implies that the bipolaron exciton is a kind of luminous species in polymers.

1 citations

Journal ArticleDOI
TL;DR: In this article, the dynamics of photo-relaxation in a one-dimensional spin-density-wave (CDW) system are reviewed, and a neutral-soliton pair is photoexcited after the relaxation from the lowest charge-transfer exciton via a self-trapped exciton (STE ).

1 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated the randomness and interactions between superconductivity and charge density wave in one dimensional bipolaron system in the half filled case at finite temperatures by carring out the numerical simulation on the S=1/2 XXZ spin chain using the transfer matrix by Suzuki-Trotter formula.
Abstract: We investigate the ellects of the randomness and interactions on the competition between superconductivity and charge density wave in one dimensional bipolaron system in the half filled case at finite temperatures by carring out the numerical simulation on the S=1/2 XXZ spin chain using the transfer matrix by Suzuki-Trotter formula. We obtain the scaling form of the correlation functions as functions of temperature and strength of the random potentials. These results are discussed in connection with the Fukuyama-Lee length in the problem of the charge density wave pinning.

1 citations

Journal ArticleDOI
TL;DR: In this article, the lattice relaxation theory was generalized to include the self-consistency of multi-electron states with lattice symmetry-breaking, and the discrete symmetries and corresponding selection rules for both radiative and nonradiative processes were discussed.
Abstract: Solitons and polarons in conducting polymers are strongly coupled electron-lattice excitations. The lattice relaxation theory generalized by us to include the self-consistency of multi-electron states with lattice symmetry-breaking is summarized. The discrete symmetries and corresponding selection rules for both radiative and nonradiative processes are discussed. Theoretically calculated probability of nonradiative decay of an electron-hole pair into a soliton pair and that of electron (hole) into polaron as well as the probability of soliton pair photo-generation is compared with results of numerical and laboratory experiments. The resonance Raman scattering data of cis-polyacetylene are interpreted in terms of a bipolaron model. The parameters involved are determined directly from experimental data. Other applications of lattice relaxation theory to conducting polymers are briefly mentioned.

1 citations


Network Information
Related Topics (5)
Band gap
86.8K papers, 2.2M citations
87% related
Magnetization
107.8K papers, 1.9M citations
86% related
Quantum dot
76.7K papers, 1.9M citations
85% related
Electron
111.1K papers, 2.1M citations
83% related
Amorphous solid
117K papers, 2.2M citations
83% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202316
202229
202127
202023
201920
201833