Direct observation of the ultrafast electron transfer process in a polymer/fullerene blend

Author

Cerullo, G. ; Lanzani, G. ; De Silvestri, S. ; Brabec, C.J. ; Zerza, G. ; Sariciftci, N.S. ; Hummelen, J.C.

Author_Institution

Dipt. di Fisica, Politecnico di Milano, Italy

fYear

2000

fDate

10-15 Sept. 2000

Abstract

Summary form only given. Photoinduced electron transfer in organic molecules is a topic of fundamental interest in photophysics and for applications to artificial photosynthesis. The detailed time resolution of this process is needed to shed light on the charge transfer mechanism. We perform ultrafast experiments on conjugated polymer/C/sub 60/ blends with sub-10-fs time resolution. We are able to time resolve for the first time the charge transfer process, obtaining a time constant /spl ap/45 fs.

Keywords

charge exchange; charge transfer states; conducting polymers; fullerenes; photochemistry; photoexcitation; polymer blends; polymer films; time resolved spectra; C/sub 60/; charge transfer mechanism; conjugated polymer thin films; direct observation; photoexcitation; photoinduced absorption; photoinduced electron transfer; polymer/fullerene blend; time resolved spectra; ultrafast electron transfer process; Electrons; Frequency; Polymers; Probes; Resonance; Signal processing; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Quantum Electronics Conference, 2000. Conference Digest. 2000 International

Conference_Location

Nice, France

Print_ISBN

0-7803-6318-3

Type

conf

DOI

10.1109/IQEC.2000.908203

Filename

908203