Photoinduced electron transfer in thin films of porphyrin-fullerene dyad and perylenetetracarboxidiimide.
Photoinduced intra- and intermolecular electron transfer (ET) in thin films of porphyrin-fullerene dyad (P-F) and perylenetetracarboxidiimide (PTCDI) was studied by means of photoelectrical and spectroscopic methods. Films consisting of smooth 100 mol% layers of P-F and PTCDI were prepared by the Langmuir-Schäfer (LS) technique and thermal evaporation, respectively. The time-resolved Maxwell displacement charge (TRMDC) and laser flash-photolysis methods were utilized to demonstrate photoinduced ET from P-F to PTCDI regardless of which chromophore is photoexcited. Finally, the information about the electron movement in the respective thin films was used to build a layered organic solar cell, whose internal quantum yield (Φ(I)) of collected charges was 13%.
Vivo
Paola
P
Department of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, FI-33101 Tampere, Finland. paola.vivo@tut.fi
Alekseev
Alexander S
AS
Kaunisto
Kimmo
K
Pekkola
Oili
O
Tolkki
Antti
A
Chukharev
Vladimir
V
Efimov
Alexander
A
Ihalainen
Petri
P
Peltonen
Jouko
J
Lemmetyinen
Helge
H