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| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 | Vardeny, Zeev Valentine | Photogeneration action spectroscopy of neutral and charged excitations in films of ladder-type poly(para-phenylene) | The photogeneration quantum efficiency action spectra of long-lived neutral and charged excitations in films of a ladder-type poly(para-phenylene) were measured. We found that both triplet and polaron action spectra show, in addition to a step function increase at the optical gap, a monotonic rise a... | Photogeneration; Neutral excitations; Charged excitations; pi-conjugated polymers; Transient spectroscopy | 1999-04 |
| 2 |
 | Vardeny, Zeev Valentine | Transient spectroscopy of excitons and polarons in C60 films from femtosecond to milliseconds | We have studied photoexcitations in C60 films using transient photomodulation and photoluminescence from 100 fs to 50 ms and absorption-detected magnetic resonance (ADMR). We show that singlet Frenkel excitons are the primary photoexcitations; their recombination kinetics in the picosecond time dom... | Transient spectroscopy; C60 films; Femtoseconds; Milliseconds | 1994-11 |
| 3 |
 | Vardeny, Zeev Valentine | Transient spectroscopy of Frenkel and charge transfer excitons in α-sexithienyl films | Photoexcitations dynamics are investigated in a-sexithienyl nanocrystalline films using transient photomodulation in a spectral range from 0.4 to 2.5 eV and time domain from 200 fs to 50 ms. We identify intrachain and interchain excitations. The former are even parity excitons with ultrafast dynami... | Transient spectroscopy; Excitons; Frenkel exciton; Charge transfer exciton; Transient photomodulation | 1997-10 |
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