Line shape of emission spectra of the luminescent polymer poly(p-phenylene vinylene)
The influence of electron-phonon coupling in the emission spectra of self-assembly (SA) films of poly(p-phenylene vinylene) (PPV) is discussed. PPV is an important polymeric system because it exhibits strong luminescence effect. A semi-empirical model was used to analyze the photoluminescence spectra of PPV. This model assumes that defects along the molecule give rise to a distribution of conjugated segments of different lengths. In addition, it was considered that electronic transition was essentially coupled with three effective phonon modes with correspondent energies at 62, -139 and 192 meV, which were observed experimentally.
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Física
2002
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332002000300018 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|