Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2006 Mar 24;96(11):117403. Epub 2006 Mar 23.

Influence of copolymer interface orientation on the optical emission of polymeric semiconductor heterojunctions.

Author information

  • 1Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom.

Abstract

We have examined the Coulombic interactions at the interface in a blend of two copolymers with intramolecular charge-transfer character and optimized band offsets for photoinduced charge generation. The combination of both time-resolved measurements of photoluminescence, and quantum-chemical modeling of the heterojunction allows us to show that relative orientation across the heterojunction can lead to either a repulsive barrier ( approximately 65 meV) or an attractive interaction which can enhance the charge-transfer processes. We conclude that polymer orientation at the heterojunction can be as important as energy-band offsets in determining the dynamics of charge separation and optical emission.

PMID:
16605870
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk