Abstract
The study shows that, in a conjugated polymer, there exists a novel photo-induced phenomenon: A photo-induced polarization inversion, when a single-exciton is photoexcited and becomes a bi-exciton. The reason is that, in a conjugated polymer, a single-exciton displays normal polarization, whereas a bi-exciton exhibits negative polarization. The physical significance of negative polarization is explored. Photo-induced polarization inversion is an ultrafast switching process, which could be used to make photo-induced ultrafast switch devices.
| Original language | English |
|---|---|
| Pages (from-to) | 737-740 |
| Number of pages | 4 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 4086 |
| DOIs | |
| State | Published - 2000 |
| Externally published | Yes |
| Event | 4th International Conference on Thin Film Physics and Applications - Shanghai, China Duration: 8 May 2000 → 11 May 2000 |
Keywords
- Conjugated polymer
- Exciton
- Negative polarization
- Photo-induced polarization inversion
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