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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 | Excitons, polarons, and laser action in poly(p-phenylene vinylene) films | We have used a multitude of linear and nonlinear cw optical spectroscopies to study the optical properties of water precursor poly(p-phenylene vinylene) (PPV) thin films. These spectroscopies include absorption, photoluminescence, photoinduced absorption and their respective optically detected magne... | PPV films; Excitons; Laser action; Poly(p-phenylene vinylene) | 2003 |
| 3 |
 | 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 |
| 4 |
 | Vardeny, Zeev Valentine | Laser action in polydialkylfluorene films: influence of low-temperature thermal treatment | We have used a variety of optical probes to investigate the changes occurring upon low-temperature thermal treatment to the emissive properties of dialkyl substituted polyfluorene thin films. We found that the low-temperature-driven morphological changes involving aggregates formation, which are ob... | Laser action; Polydialkylfluorene films; pi-conjugated polymers; Thermal treatment | 1999 |
| 5 |
 | Vardeny, Zeev Valentine | Photoexcitation dynamics and laser action in solutions and films of PPE-PPV copolymer | We used a variety of ultrafast and steady-state spectroscopy techniques to study the photoexcitation dynamics and laser action in dilute and concentrated solutions and in thin films of poly(phenylene-ethynylene)/ poly(phenylene-vinylene) [PPE-PPV] copolymer. We found that the primary photoexcitatio... | Photoexcitation dynamics; Laser action; PPE-PPV copolymers | 2004-04 |
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