Speaker
Mrs
Newayemedhin Tegegne
(Stellenbosch University)
Description
The bulk heterojunction of a donor polymer and fullerene derivatives is common active layer in organic solar cells. The choice of fullerenes plays an important role in the efficiency. The fullerene, [6,6]-phenyl-C71-butylic acid methyl ester (PCBM71) is chosen in many cases over [6,6]-phenyl-C61-butylic acid methyl ester (PCBM61) for its higher absorption in the visible. We investigated the charge dynamics of bulk heterojunction of therthiophene-isoindigo as a donor and two fullerene derivatives PCBM71 or PCBM61 as acceptors using femtosecond-transient absorption spectroscopy. The samples were pumped at 388 nm to effectively pump the fullerene and not the donor polymer.
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
PhD
Apply to be<br> considered for a student <br> award (Yes / No)?
Yes
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
No
Main supervisor (name and email)<br>and his / her institution
Heinrich Schwoerer
heso@sun.ac.za
Stellenbosch University
Primary author
Mrs
Newayemedhin Tegegne
(Stellenbosch University)
Co-authors
Prof.
Heinrich Schwoerer
(Stellenbosch University)
Prof.
Wendimagegn Mammo
(Addis Ababa University)
Dr
Zelalem Abdissa Abdissa
(Addis Ababa Univeristy)
