Electro-modulation of absorption in sexithiophene metal/insulator/semiconductor structures
| Autor: | Fabrice Charra, Pierre-Alain Chollet, Denis Fichou |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Materials science
genetic structures business.industry General Engineering General Physics and Astronomy chemistry.chemical_element Insulator (electricity) Metal Wavelength Semiconductor chemistry Aluminium Electric field visual_art Electrode visual_art.visual_art_medium Optoelectronics sense organs Thin film business |
| Zdroj: | Pure and Applied Optics: Journal of the European Optical Society Part A. 5:521-527 |
| ISSN: | 1361-6617 0963-9659 |
| Popis: | The influence of charge injection induced by an electric field on the optical absorption of -sexithiophene () thin films is studied. The analysis of this electro-modulated absorption (EMA) at variable incidence angle and wavelength enables us to determine the various contributions in the stratified structure (metal/insulator/semiconductor). EMA enhancement at 1.5 eV can be unambiguously assigned to the radical cation . Owing to the difference of energy level for aluminium and gold electrodes, charge injection occurs in the dark in the case of gold, while it needs to be photo-assisted in the case of aluminium. |
| Databáze: | OpenAIRE |
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