Pedro M. P. Salomé, Viktor Fjallstrom, Adam Hultqvist, Piotr Szaniawski, Uwe Zimmermann and Marika Edoff The effect of Mo back contact ageing on Cu(In,Ga)Se2 thin-film solar cells Progress in Photovoltaics: Research and Applications 22
The ageing of the Mo back contact shows small but positive changes in the electrical performance of Cu(In,Ga)Se2 thin-film solar cells, namely an increase of the open circuit voltage, fill factor and efficiency. By ageing the Mo back contact, a slightly higher net acceptor concentration of Na contents similar to the ones of the reference sample is found. Heat treatment of fresh Mo layers in an oxygen atmosphere showed similar effects to ageing.
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