02106oam 2200433Ka 450 991070285530332120090707155850.0(CKB)4330000001929325(OCoLC)317626727(EXLCZ)99433000000192932520090402d2009 uy 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierPerformance limitations of mc-Si solar cells caused by defect clusters[electronic resource] preprint /B. Sopori ... [and others]Golden, CO :National Renewable Energy Laboratory,[2009]10 pages digital, PDF fileConference paper NREL/CP ;520-45012Title from title screen (viewed April 2009)."February 2009.""To be presented at Semicon China 2009, Shanghai, China, March 17-19, 2009."Multicrystalline silicon wafers used for solar cells exhibit defect clusters--localized crystal defects in and near grains of some specific orientations. Defect clusters are also dominant sites for impurity precipitation, and they remain ungettered and unpassivated through the solar cell processing. This paper describes characteristics of defect clusters, and shows, through theory and experiment, that defect clusters typically lower cell efficiency by 3 to 4 absolute percentage points. To recover this efficiency loss, it is necessary to getter precipitated impurities.Performance Limitations of mc-Si Solar Cells Caused by Defect Clusters Solar cellsDefectsPhotovoltaic cellsResearchSolar cellsDefects.Photovoltaic cellsResearch.Sopori Bhushan Lal1382971National Renewable Energy Laboratory (U.S.)SOESOESOEGPOBOOK9910702855303321Performance limitations of mc-Si solar cells caused by defect clusters3472968UNINA