Even parity states in PPV, polythiophene and polysilanes

F. Guo, M. Chandross, Sumitendra Mazumdar

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Two photon absorptions (TPA) in conjugated polymers with large bond alternation are reinterpreted. TPA to the 2Ag in long chains should be tiny due to cancellation effects, and therefore the observed strong, narrow TPA is to a higher even parity state. We also present the first theoretical evidence for bound biexcitons, and explain recent photoinduced absorption data.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
EditorsAnthony F. Garito, Alex K-Y. Jen, Charles Y-C. Lee, Larry R. Dalton
PublisherPubl by Materials Research Society
Number of pages6
ISBN (Print)1558992278
Publication statusPublished - 1994
EventProceedings of the MRS 1993 Fall Meeting - Boston, MA, USA
Duration: Nov 29 1993Dec 3 1993


OtherProceedings of the MRS 1993 Fall Meeting
CityBoston, MA, USA


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

Guo, F., Chandross, M., & Mazumdar, S. (1994). Even parity states in PPV, polythiophene and polysilanes. In A. F. Garito, A. K-Y. Jen, C. Y-C. Lee, & L. R. Dalton (Eds.), Materials Research Society Symposium Proceedings (Vol. 328, pp. 787-792). Publ by Materials Research Society.