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Interaction of Oxygen with Native Chemical Defects in CuInSe2 Thin Films

  • Rommel Noufi (a1) and David Cahen (a2)


We formulate a consistent defect chemical model of the effect of air/02 anneals on CuInSe2 polycrystalline thin films. The model centers on O-induced neutralization of (near) surface donor states in CuInSe2 grains. The simplest identification of these states is with ionized Se vacancies, due to coordinatively unsaturated In on grain surfaces and boundaries.



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