| Autor: |
Agostinelli, T., Caironi, M., Natali, D., Sampietro, M., Dassa, G., Canesi, E. V., Bertarelli, C., Zerbi, G., Cabanillas-Gonzalez, J., De Silvestri, S., Lanzani, G. |
| Předmět: |
|
| Zdroj: |
Journal of Applied Physics; Dec2008, Vol. 104 Issue 11, p114508, 5p, 1 Diagram, 7 Graphs |
| Abstrakt: |
Planar organic detectors for the near infrared region of the light spectrum have been realized, processing from solution the quinoid molecule 5,5′-bis(3,5-di-tert-butyl-4-oxo-2,5-cyclohexadiene-1-ylidene)-5,5′-dihydro-2,2′-bithiophene (QBT), which shows a peculiar absorption at 680 nm. Sensitization of the active material was obtained by creating a bulk donor-acceptor interface with poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene], which acts as hole acceptor. Photoexcitation and relaxation dynamics in pristine materials and bulk heterojunction have been investigated by means of pump-probe measurements, revealing charge transfer from QBT to polymer and efficient energy transfer the other way round. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
