Abstract
The interfacial electronic structure and photoexcitation kinetics of MEH-PPV/P3HTheterolayer film on gold were studied using two-photon photoemission spectroscopy. Weobserved that the photoelectron kinetic energy distribution and the photoexcitationkinetics exhibit the characteristics of the MEH-PPV layer, and the absolute two-photonphotoemission yield is determined by the P3HT layer. On the basis of the photoexcitationkinetics and the photoelectron kinetic energy distribution, we conclude that acharge transfer occurs efficiently from P3HT to MEH-PPV before photoemission.
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