Abstract
Ultrafast exciton dynamics in polycrystalline films of dipolar N,N-dimethylaminobenzylidene 1,3-indandione (DMABI) molecules was studied by femtosecond luminescence upconversion and transient absorption techniques. An enhanced nonradiative relaxation of the excitons, taking place on the subpicosecond time scale, was observed. It was attributed to the initial localisation and thermalisation of the self-trapped excitons. One-dimensional exciton-exciton annihilation was observed under high excitation conditions.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 169-172 |
| Number of pages | 4 |
| Journal | Synthetic Metals |
| Volume | 109 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 1 2000 |
| Externally published | Yes |
| Event | The 18th International Conference on Electrical and Related Properties of Organic Solids (ERPOS-8) - Szklarska Poreba, Pol Duration: Jun 26 1999 → Jun 30 1999 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry