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Absorption losses at a nanorough silver back reflector of a solar cell were measured with high accuracy by photothermal deflection spectroscopy. Roughness was characterized by atomic force microscopy. The observed increase of absorption, compared to the smooth silver, was explained by the surface plasmon absorption. Two series of silver back reflectors ͑one covered with thin ZnO layer͒ were investigated and their absorption related to surface morphology.

Effects of substrate temperature and near-substrate plasma density on the properties of dc magnetron sputtered aluminum doped zinc oxide J. Appl. Phys. 94, 5514 (2003); 10.1063/1.1615694 Erratum: "Structural, electrical and optical properties of aluminum doped zinc oxide films prepared by rf magnetron sputtering" [J.