TO
1 - 25 of 3
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Vardeny, Zeev Valentine | Ultrafast spectroscopy of excitons in single-walled carbon nanotubes | We studied the femtosecond dynamics of photoexcitations in films containing semiconducting and metallic single-walled carbon nanotubes (SWNTs), using various pump-probe wavelengths and intensities.We found that confined excitons and charge carriers with subpicosecond dynamics dominate the ultrafas... | Ultrafast spectroscopy; Excitons; Single-walled carbon nanotubes; SWNT | 2004-01 |
| 2 |
 | Vardeny, Zeev Valentine | Ultrafast spectroscopy of even-parity states in ∏-conjugated polymers | Relaxation dynamics of even parity (Ag) states in poly(p-phenylene vinylene) derivatives are studied using a novel fsec transient spectroscopy, in which two different excitation pulses successively generate odd parity (1 1Bµ) excitons at 2.2 eV and then reexcite them to higher Ag states. For reexci... | pi-conjugated polymers; Ultrafast spectroscopy; PPV; Relaxation dynamics | 2000-09 |
| 3 |
 | Vardeny, Zeev Valentine; Gellermann, Werner | Near-infrared ps transient photoinduced absorption in conjugated systems | We demonstrate the use of a color center laser in a pump-and-probe correlation technique which enables us to extend the probe spectral range into the infrared. As a result, we find strong photoinduced infrared absorption in several 7t-conjugated polymers and oligomers. We associate this absorption w... | Ultrafast spectroscopy; Color center laser; Photoinduced absorption; Singlet excitons; Even parity states; Odd parity states; Infrared absorption | 1997 |
1 - 25 of 3