Gain dynamics in oriented thin films of an oligo(para-phenylene vinylene)
| Autor: | L. Guidoni, T.-A Pham, Jean-Yves Bigot, Georges Hadziioannou, Thierry Barisien, V. Grayer |
|---|---|
| Přispěvatelé: | Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Faculty of Science and Engineering, Polymer Chemistry and Bioengineering |
| Jazyk: | angličtina |
| Rok vydání: | 2000 |
| Předmět: |
Amplified spontaneous emission
Materials science optical films Exciton General Physics and Astronomy time resolved spectra PPV 02 engineering and technology Conjugated system Photochemistry 01 natural sciences Condensed Matter::Materials Science Phenylene 0103 physical sciences Physical and Theoretical Chemistry Thin film 010306 general physics Spectroscopy excited states chemistry.chemical_classification molecular orientation EXCITONS light emitting devices Polymer 021001 nanoscience & nanotechnology PHOTOEXCITATIONS STATES chemistry thin films PI-CONJUGATED OLIGOMERS Femtosecond spectral line intensity photoluminescence fluorescence POLYMERS EMISSION 0210 nano-technology superradiance organic compounds |
| Zdroj: | Chemical Physics Letters Chemical Physics Letters, Elsevier, 2000, 318, pp.459. ⟨10.1016/S0009-2614(00)00048-8⟩ Chemical Physics Letters, 318(4-5), 459-465. ELSEVIER SCIENCE BV |
| ISSN: | 0009-2614 1873-4448 |
| DOI: | 10.1016/S0009-2614(00)00048-8⟩ |
| Popis: | The dynamics of the photo-excited states in crystalline thin films of a model oligo( para -phenylene vinylene) is studied with femtosecond pump–probe spectroscopy. The process of amplified spontaneous emission and the corresponding optical gain are shown to depend drastically on the crystallographic order present in the films. The results stress the important role of the molecular orientation in order to obtain efficient light-emitting conjugated organic devices. |
| Databáze: | OpenAIRE |
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