Evolution of the electronic structure of cyclic polythiophene upon bipolaron doping
| dc.creator | Giri, D. | |
| dc.creator | Kundu, K. | |
| dc.date | 1996-05-15 | |
| dc.date.accessioned | 2026-07-07T03:08:33Z | |
| dc.date.available | 2026-07-07T03:08:33Z | |
| dc.description | Electronic structures of undoped and doped cyclic polythiophene (PT) are studied using modified $σ$-bond compressibility model. Cyclic PT doped with odd number of bipolarons creates an aromatic polyene backbone containing (4$n$+2) $π$-electrons and the system is driven towards the quinoid form. Consequently, we find an insulator-metal transition for dopant concentration $\geq$ 14 mol $\%$ and a $\sim$ 0.8 eV redshift in Fermi energy at 30 mol$\%$. For even number of bipolarons, we propose here that the form having two singly occupied degenerate orbitals will be stable in a sufficiently large cyclic PT. | |
| dc.description | 10 pages, REVTEX file (4 figures available on request) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9605093 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9605093 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27542 | |
| dc.subject | Condensed Matter | |
| dc.title | Evolution of the electronic structure of cyclic polythiophene upon bipolaron doping | |
| dc.type | text |