Hybrid excitons in organic-inorganic semiconducting quantum wells in a microcavity

We investigate theoretically the optical properties of composite organic-inorganic semiconductor quantum wells. These properties are dominated by hybrid Frenkel (or charge-transfer) and Wannier-Mott excitonic states. An important effect is the possibility of using the Stark shift to tune the resonance between Frenkel and Wannier-Mott excitons. This fact is very important from a practical point of view because it may be difficult to grow such a structure exactly at resonance. We also discussed the coupling of Frenkel or charge transfer and Wannier-Mott exciton through a microcavity photon. We evaluate the hybrid exciton-polariton Rabi splitting. In the strong coupling regime the Rabi splitting depends essentially on the oscillator strength of the Frenkel or charge-transfer exciton. (C) 2000 Elsevier Science B.V. All rights reserved.