Exciton radiative decay through plasmon modes in planar   metal-semiconductor structures
  We develop a non-local dielectric response theory to describe the temperature dependence of exciton lifetime in metal-semiconductor heterostructures. Coupling between excitons and surface plasmons results in a strongly nonmonotonous behaviour of exciton radiative decay rate versus temperature. Tuning the plasmon frequency one can control the efficiency of exciton emission of light. 
M.V. Durnev, A.V. Kavokin, B. Gil
cond-mat.mes-hall