Orbital line-up at poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV)/poly(3-hexylthiophene) (P3HT) heterojunction

Wenfeng Wang; Rudy Schlaf

doi:10.1063/1.4905502

Orbital line-up at poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV)/poly(3-hexylthiophene) (P3HT) heterojunction

J Chem Phys. 2015 Jan 14;142(2):024705. doi: 10.1063/1.4905502.

Authors

Wenfeng Wang¹, Rudy Schlaf²

Affiliations

¹ Department of Chemistry, University of South Florida, Tampa, Florida 33620, USA.
² Department of Electrical Engineering, University of South Florida, Tampa, Florida 33620, USA.

PMID: 25591375
DOI: 10.1063/1.4905502

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.