Martin Green Archives – The Green Optimistic green tech news, since 2008 Tue, 29 Sep 2009 16:06:01 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Fraunhofer Develops New, Easy to Make High Efficiency Solar Cells https://www.greenoptimistic.com/fraunhofer-n-type-solar-cells-20090929/ https://www.greenoptimistic.com/fraunhofer-n-type-solar-cells-20090929/#respond Tue, 29 Sep 2009 16:06:01 +0000 https://www.greenoptimistic.com/?p=4560 Yet another efficiency record has been established for mass-producible solar cells: 23.4%. The Fraunhofer Institute for Solar Energy Systems (ISE) from Germany succeeded to manufacture a single-crystal silicon solar cell of a thin p-type semiconductor layer residing on an n-type semiconductor substrate. The solar cell's area is 2x2cm.

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