Document Type
Article
Abstract
In bulk heterojunction polymer solar cells, external photoexcitation results in localized excitons in the polymer chain. After hot exciton formation and subsequent relaxation, the dipole moment drives the electron to partially transfer to extended orbitals from the original localized ones, leading to self-delocalization. Based on the dynamic fluorescence spectra, the delocalization of excitons is revealed to be an intrinsic property dominated by exciton decay, acting as a bridge for the exciton to diffuse in the polymeric solar cell. The modification of the dipole moment enhances the efficiency of polymer solar cells.
Publication Date
January 2014
Publication Title
Polymers
ISSN
20734360
Volume
8
Issue
12
First Page
1
Last Page
9
DOI
10.3390/polym8120414
Recommended Citation
George, Thomas; Chen, W.; Jiang, D.; Chen, R.; and Li, S., "Intrinsic Delocalization during the Decay of Excitons in Polymeric Solar Cells" (2014). Chemistry & Biochemistry Faculty Works. 28.
DOI: https://doi.org/10.3390/polym8120414
Available at:
https://irl.umsl.edu/chemistry-faculty/28