Forster energy transfer in a planar geometry

Although in such an estimation we assumed an infinitely thick layer of organic molecules the obtained results are correct with rather high accuracy even for layers with thickness of order 10 nm because the electric field created by exciton polarization penetrates into the organic layer only on lengths of the order of the semiconductor quantum well thickness and the barrier between the quantum well and the organic layer. 

For studies of the dynamics of energy transfer from a semiconductor quantum well to organics it is very important to know the origin of exciton luminescence of the semiconductor quantum well under electric or optical nonresonant pumping 

The sketch of the planar structure under discussion (from (13)). 

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