ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Analysis of collision-controlled time dependence of diffusion coefficient of polaron pairs from transient absorption spectra of conducting polymers

Miroslav Menšík, Jiří Pfleger, and Petr Toman

Academy of Sciences of the Czech Republic, Prague, Czech Republic

E-mail: mensik@imc.cas.cz

Abstract: We derived relations for time-dependent diffusion coefficient of photoexcited species determined from transient absorption spectra for various types of collision processes controlling decay of photoexcited species of conducting polymers. The method was applied for time-resolved experimental data of polaron pairs decay in 10-nm-thick thin films of regioregular poly(3-hexyl-thiophene).

Keywords: Conducting polymers ; Time-dependent diffusion coefficient ; Time-resolved absorption spectroscopy ; Exciton ; Polaron ; P3HT 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-018-0439-1

Chemical Papers 72 (7) 1729–1734 (2018)