News Column

Findings from R&D Center Update Knowledge of Solar Energy

June 27, 2014

By a News Reporter-Staff News Editor at Energy Weekly News -- Investigators publish new report on Solar Energy. According to news reporting out of Taejon, South Korea, by VerticalNews editors, research stated, "Cu(In,Ga)S(2)nanopowder was printed on Mo-coated sodalime glass substrates and selenized from a Se-coated cover glass. The selenized Cu(In,Ga)(Se,S)(2) film consisted of three layers with a different morphologies and micro-structures."

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 Amsterdam, Netherlands. (Elsevier -; Solar Energy Materials and Solar Cells -

Our news journalists report that additional information may be obtained by contacting S.W. Park, GS Caltex Corp, R&D Center, Taejon 305380, South Korea. Additional authors for this research include D.I. Kim, T.S. Lee, K. Lee, Y. Yoon, Y.H. Cho, J.H. Kim, K.M. Ahn, K.J. Lee and C.W. Jeon.

Keywords for this news article include: Asia, Taejon, Solar Cell, South Korea, Solar Energy

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Source: Energy Weekly News

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