Quantum confinement-tunable ultrafast charge transfer at the PbS quantum dot and phenyl-C₆₁-butyric acid methyl ester interface.

@article{ElBallouli2014QuantumCU,
  title={Quantum confinement-tunable ultrafast charge transfer at the PbS quantum dot and phenyl-C₆₁-butyric acid methyl ester interface.},
  author={Ala'a O El-Ballouli and Erkki Alarousu and Marco Bernardi and Shawkat Mohammed Aly and A P Lagrow and Osman M Bakr and Omar Fouad Mohammed},
  journal={Journal of the American Chemical Society},
  year={2014},
  volume={136 19},
  pages={6952-9}
}
Quantum dot (QD) solar cells have emerged as promising low-cost alternatives to existing photovoltaic technologies. Here, we investigate charge transfer and separation at PbS QDs and phenyl-C61-butyric acid methyl ester (PCBM) interfaces using a combination of femtosecond broadband transient absorption (TA) spectroscopy and steady-state photoluminescence quenching measurements. We analyzed ultrafast electron injection and charge separation at PbS QD/PCBM interfaces for four different QD sizes… CONTINUE READING