Journal
PHYSICA B-CONDENSED MATTER
Volume 404, Issue 22, Pages 4445-4448Publisher
ELSEVIER
DOI: 10.1016/j.physb.2009.09.010
Keywords
Solar cell; LBIC; IQE; Grain boundary; Performance parameters; Recombination
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A different laser beam induced current (LBIC) mapping technique has been used for the measurements of spatial variation of light generated current of a solar cell. These variations are caused by parasitic resistances and defects at grain boundaries (GBs) in multicrystalline silicon solar cells (mc-Si). This study investigates and identifies the regions within mc-Si solar cells where dominating recombination and lifetime limiting processes occur. A description of the LBIC technique is presented and the results show how multicrystalline GBs and other defects affect the light generated current of a spot illuminated mc-Si solar cell. The results of the internal quantum efficiency (IQE) at wavelength of 660 nm revealed that some regions in mc-Si solar cell give rise to paths that lead current away from the intended load. (C) 2009 Elsevier B.V. All rights reserved.
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