Our news journalists obtained a quote from the research from R&D Center, "Although the top layer showed large grains recrystallized from nanocrystals, the bottom layer was almost identical to the original precursor. The middle layer, as a thin boundary layer was found to be a mixture of carbon and Cu sulfoselenide. At a higher Se thickness (> 1.2 mu m), a lower fill factor and short circuit current density were obtained, which might result from the accumulation of a Cu secondary phase."
According to the news editors, the research concluded: "The solar cell, which consisted of Al2O3:ZnO/i-ZnO/CdS/Cu(In,Ga)(S,Se)/Mo/glass using the selenized absorber, showed the following properties: efficiency=8.28%, J(sc)=26.14 mA/cm(2), V-oc=0.483 V, and fill factor=65.58% for AMG1.5 at 25 degrees C."
For more information on this research see: Solid-state selenization of printed Cu(In,Ga)S-2 nanocrystal layer and its impact on solar cell performance. Solar Energy Materials and Solar Cells, 2014;125():66-71. Solar Energy Materials and Solar Cells can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae
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