Electric Field Effect on Frenkel-Wannier-Mott Exciton States in Organic-Inorganic Semiconductor Quantum Wells
Organic and inorganic semiconductor nanostructures are the subject of many recent investigations. The ability, in the near future, to synthesize composite organic/inorganic semiconductor heterostructures is of crucial importance not only in the development of novel nanostructured materials for electronics, optics, transport..., but also for understanding their size-dependent physical properties. Recently1–3 a new type of elementary states generated by optical exicitation are hybrid excitons which can be obtained from the resonant mixing of Frenkel-Wannier-Mott excitons in organic/inorganic quantum wells. This novel system, the hybrid excitons localized in organic/inorganic semiconductor heterostructure, is expected to show characteristic physical properties and also provide a basis for new electrooptic technology. The hybrid excitons acquire the properties of both types of excitons. They have very strong oscillator strength like Frenkel excitons. They are delocalized and possess a large size like Wannier-Mott excitons, then they are sensitive to external pertrubations, namely electric and magnetic field effects.
KeywordsExciton State Stark Shift Electric Field Effect Semiconductor Heterostructures Frenkel Exciton
Unable to display preview. Download preview PDF.
- 1.V.M. Agronovich, R.D. Atanasov, F. Bassani, Solid State Commun. 92, 292 (1994).Google Scholar