Converting Wannier into Frenkel excitons in an inorganic/organic hybrid semiconductor nanostructure.
Electronic coupling between Wannier and Frenkel excitons in an inorganic/organic semiconductor hybrid structure is experimentally observed. Time-resolved photoluminescence and excitation spectroscopy directly demonstrate that electronic excitation energy can be transferred with an efficiency of up to 50% from an inorganic ZnO quantum well to an organic [2,2-p-phenylenebis-(5-phenyloxazol), alpha-sexithiophene] overlayer. The coupling is mediated via dipole-dipole-interaction analog to the Förster transfer in donor-acceptor systems.
Blumstengel
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S
Institut für Physik, Humboldt-Universität zu Berlin, Newtonstrabe 15, 12489 Berlin, Germany.
Sadofev
S
S
Xu
C
C
Puls
J
J
Henneberger
F
F