Nanostructured Organic Thin Films: Electronic Energetics and Devices
- 10 December 2001
- journal article
- Published by World Scientific Pub Co Pte Ltd in International Journal of Modern Physics B
- Vol. 15 (28n30) , 3722-3726
- https://doi.org/10.1142/s0217979201008512
Abstract
We report on the optoelectronic properties of vacuum sublimed organic thin films of the oligothienyls ( Tn ) model systems. The Davydov splitting (DS) of the lowest exciton is about 0.3 eV and decreases with the conjugation length when going from T 4 to T 6. The lowest DS component is partially forbidden due to the crystal packing and the spectral activity occurs via Herzberg-Teller (HT) vibronic coupling. We show the real time dynamics of the HT coupling by coherent vibrational spectroscopy and the role of aggregates in the energy transfer processes within the films.Keywords
This publication has 21 references indexed in Scilit:
- Size of Electron-Hole Pairs in-Conjugated SystemsPhysical Review Letters, 1999
- Real-Time Vibronic Coupling Dynamics in a Prototypical Conjugated OligomerPhysical Review Letters, 1999
- Influence of Interchain Interactions on the Absorption and Luminescence of Conjugated Oligomers and Polymers: A Quantum-Chemical CharacterizationJournal of the American Chemical Society, 1998
- The intramolecular vibrations of prototypical polythiophenesThe Journal of Chemical Physics, 1996
- Growth of conjugated oligomer thin films studied by atomic-force microscopyPhysical Review B, 1995
- Logic Gates Made from Polymer Transistors and Their Use in Ring OscillatorsScience, 1995
- Exciton Coupling Effects in the Absorption and Photoluminescence of Sexithiophene DerivativesThe Journal of Physical Chemistry, 1995
- Organic Molecular Beam Deposition of α-SexithienylJapanese Journal of Applied Physics, 1994
- X-ray determination of the crystal structure and orientation of vacuum evaporated sexithiophene filmsAdvanced Materials, 1993
- Electronic and infrared properties of the α-sexithienyl single crystalSynthetic Metals, 1991