  We present a theoretical model describing the photo-electrical response of a
system composed of quantum dots embedded in a dielectric matrix. The model is
based on the non-coherent rate equations and the Transfer Hamiltonian
formalism. The self charge was included. Within this methodology, the response
of the system only depends on fundamental material parameters and its geometry.
Transport through several quantum dot configurations was simulated obtaining
current-voltage curves in dark and illuminating conditions for three different
scenarios: single one quantum dot and two quantum dots in parallel and serial
configurations. Despite the simplicity of the model, it has been used to
reproduce successfully experimental results.
