We consider a hybrid heterostructure containing an inorganic quantum well in close proximity with organic material
as overlayer. The resonant optical pumping of Frenkel exciton can lead to an
efficient indirect pumping of Wannier excitons. As organic material in such a hybrid
structure, we consider crystalline tetracene. In tetracene, the
singlet exciton energy is close to twice the one of triplet exciton state and
singlet exciton fission into two triplets can be efficient. This process in
tetracene is thermally activated and we investigate here how the temperature-dependent
exciton energy transfer affects the functional properties of hybrid organic-inorganic
nanostructures. We have obtained the exact analytical solution of diffusion
equation for organics at different temperatures defining different diffusion
lengths of excitons. The effectiveness of
energy transfer in hybrid with tetracene was calculated by definite method for
two selected temperatures that open possibility to operate in full
region of temperatures.Temperature dependence of energy transfer opens
a new possibility to turn on and off the indirect pumping due to energy
transfer from the organic subsystem to the inorganic subsystem.
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