title: Orbital line-up at poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV)/poly(3-hexylthiophene) (P3HT) heterojunction.
abstract: The poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV)/poly(3-hexylthiophene) (P3HT) heterojunction was investigated by photoemission spectroscopy. The orbital line-up at the MEH-PPV/P3HT heterojunction was determined based on the data of X-ray and ultra-violet photoemission measurements. The results were discussed with reference to the Induced Density of Interface States (IDIS) and integer charge transfer models. The predicted interface orbital line-up by IDIS is in agreement with measured energy alignment of the investigated interface. This suggests the IDIS model is also valid for polymer/polymer heterojunctions.
authors.affiliation: Department of Chemistry, University of South Florida, Tampa, Florida 33620, USA.
authors.forename: Wenfeng
authors.initials: W
authors.lastname: Wang
authors.affiliation: Department of Electrical Engineering, University of South Florida, Tampa, Florida 33620, USA.
authors.forename: Rudy
authors.initials: R
authors.lastname: Schlaf