TiO 2 :P3HT-Heteroübergang
0 . 0 0 . 4 0 . 8
1 . 2 P r i s t i n e P 3 H T
T i O 2 : P 3 H T P C B M : P 3 H T T i O 2 o n P 3 H T td = 2 5 f s
- 0 . 4 0 . 0 0 . 4
td = 1 p s
∆T/T (norm.)
5 0 0 6 0 0 7 0 0
- 0 . 4 0 . 0
td = 1 0 p s
W a v e l e n g t h λ ( n m )
2 . 4 2 . 2 2 1 . 8
P h o t o n e n e r g y ( e V )
Abbildung B.1.: Relative Transmissionsänderung ∆T /T in den gemischten TiO2:P3HT- und PCBM:P3HT-Heteroübergängen einer reinen P3HT-Schicht (pristine P3HT), sowie eines ebenen TiO2:P3HT-Heteroübergangs als Funktion der Abfrage-Wellenlängeλund ausgewählten Verschiebe-zeitentdzwischen Anrege- und Abfrage-Impuls, gemessen bei einer Anregungsdichte von 30 µJ cm−2. Alle Spektren sind auf das Signal beiλ=555 nm undtd=25 fs normiert.
0 1 0 0 0 2 0 0 0 3 0 0 0 4 0 0 0 5 0 0 0
Abbildung B.2.: Relative Transmissionsänderung nach resonanter Anregung im sichtbaren Spektral-bereich bei der Abfrage-Wellenlänge 1200 nm, normiert auf eins. Die induzierte Absorption ist auf Absorption durch den angeregten Exzitonen-Zustand zurück zu führen.
- 0 . 8
Abbildung B.3.: Relative Transmissionsänderung bei Abfrage-Wellenlängen von a) 650 nm und b) 720 nm. In beiden Fällen normiert auf das Signal aus Abbildung 7.2 bei 555 nm. a) Die Absorption durch Polaron-Paare und b) Absorption durch Polaronen oder des CT-Zustandes baut sich in allen Proben direkt nach der Anregung gleichermaßen auf. Teile c) und d) zeigen die Daten nochmals normiert auf eins für einen Vergleich der Zerfallsdynamik.
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