SOLAR CELL FOR CONTROLLING OPTICAL ABSORPTION WAVELENGTH BAND

摘要

PURPOSE: A solar cell is provided to improve optical absorption by forming a selective transmission layer for infrared ray between optical absorption layers.;CONSTITUTION: A first optical absorption layer(400) includes a silicon layer containing oxygen on a first electrode. A second optical absorption layer(600) includes a silicon layer containing germanium on the first optical absorption layer. A second electrode(700) is formed on the second optical absorption layer. The first optical absorption layer includes semiconductor layers having different oxygen content. The second optical absorption layer includes semiconductor layers having different germanium content.;COPYRIGHT KIPO 2013