π-Conjugated polymers have become an important class of materials for electronic devices. It was suggested recently that a charge flipping of spin carrier will take place when a charged polaron is re-excited by a photon. A possible photo-control valve or switch can be designed from this phenomenon. In the framework of the tight-binding approximation we studied the re-exciting process both in degenerate and non-degenerate polymers and checked all the possible re-excited states. © 2005 Published by Elsevier B.V.
Zhang, D. C., Liu, D. S., Mei, L. M., Xie, S. J., & Sun, X. (2005). Re-excited states of solitons and polarons in conjugated polymers. In Synthetic Metals (Vol. 152, pp. 369–372). https://doi.org/10.1016/j.synthmet.2005.07.088