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Results of defect levels spectroscopy on epitaxial and polycrystalline CuInSe 2 by photocurrent and capacitance methods are presented. Electronic parameters of defect levels found by photocurrent methods are compared with those obtained through the use of capacitance spectroscopy on CuInSe 2 solar cells. In the discussion, we include the Meyer–Neldel plot as a method of differentiation...
CuGaSe 2 absorber layers were prepared on molybdenum substrates by electrochemical codeposition of copper and gallium and subsequential annealing in selenium vapour. The electrodeposition was made from a deep eutectic based ionic liquid consisting of choline chloride/urea (Reline) with a plating efficiency of over 85%. The precursor film composition is controlled by the ratio of the copper...
We have studied a series of high quality Cu(In,Ga)Se2 thin film solar cells (efficiencies 15% - 18%) with spectrally resolved confocal photoluminescence (PL) which allows for a spatial resolution of ?? 0.8 ??m. The recorded PL data were analyzed by application of Planck's generalized radiation law, which allows for quantification of values for the local splitting of quasi-Fermi levels and of the local...
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