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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Vardeny, Zeev Valentine; Ehrenfreund, Eitan A. | Excitation dynamics in disubstituted polyacetylene | We studied the excitation dynamics in films of disubstituted polyacetylene, a degenerate ground-state conjugated polymer, using psec transient and steady-state spectroscopies. The polymer is found to support charged and neutral topological soliton excitations concurrent with a strong intrinsic p... | Excitation dynamics; Disubstituted polyacetylene; Laser action | 1999-05 |
| 2 |
 | Vardeny, Zeev Valentine | Laser action in conducting polymers | We discuss both cooperative radiation and stimulated emission and consider their role in spectral narrowing of luminescent conducting polymers. We argue that cooperative radiation is favored in films with poor optical confinement. On the other hand, directional stimulated emission can be observed in... | Laser action; Cooperative radiation; Stimulated emission; PPV; Disubstituted polyacetylene; Excitons; Spectral narrowing; Plastic lasers; Superfluorescence; Microcavity lasers | 1997 |
| 3 |
 | Vardeny, Zeev Valentine | Ultrafast dynamics of excitons and solitons in disubstituted polyacetylene | We studied the ultrafast photoexcitation dynamics in disubstituted polyacetylene (DPA). We found two distinctively different relaxation channels for the photogenerated excitons; ionic and covalent pathways. In DPA films the photogenerated odd-parity (Bu) excitons that are responsible for the high ... | Ultrafast dynamics; Photoexcitation; Excitons; Disubstituted polyacetylene; Excitons; DPA; Relaxation channels | 2003-01 |
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