Optical Properties of Transient Charge Carriers Photogenerated on a Femtosecond-to-Nanosecond Time Scale in Langmuir-Blodgett Films

Thierry Fournier (1) , Serge Palacin (1) , Thu Hoa Tran Thi (1) , Daniel Houde (2) , Claude Pépin (2)

1 SCM - Service de Chimie Moléculaire
2 Sherbrooke - Laboratoire de Spectroscopie Optique Ultrarapide

Vectorial electron transfer occurs in Langmuir-Blodgett films when semiamphiphilic porphyrin-phthalocyanine dimers are photoexcited with ultrashort laser pulses. The primary charge arriers are generated from the singlet excited states of the donor-acceptor pairs while the secondary charge carriers are issued from cascade reactions involving the triplet excited state of the dimer. Their quantum yield and lifetime are measured.

Domains: Chemical Sciences; Material chemistry

Thierry Fournier, Serge Palacin, Thu Hoa Tran Thi, Daniel Houde, Claude Pépin. Optical Properties of Transient Charge Carriers Photogenerated on a Femtosecond-to-Nanosecond Time Scale in Langmuir-Blodgett Films. Thin Solid Films, 1994, 242, pp.92-95. ⟨10.1016/0040-6090(94)90508-8⟩. ⟨cea-01057119⟩