The modulation of surface texture for single-crystalline Si solar cells using calibrated silver nanoparticles as a catalyst

State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, People's Republic of China.
Nanotechnology (Impact Factor: 3.82). 01/2011; 22(2):025703. DOI: 10.1088/0957-4484/22/2/025703
Source: PubMed


We have employed Ag nanoparticles with calibrated size as catalysts to modulate the
surface texture of single-crystalline Si surfaces for reducing sunlight reflectivity. Both
experiments and theoretical analysis have proved that a well-organized microporous
structure on the pyramids can be obtained by optimizing the size of Ag nanoparticles and
the texturing time, and the Si wafer with such structures can effectively reduce the
reflectivity of sunlight. However, based on the conventional cell fabrication process, the
performance of silicon solar cells with such microporous structures gets degraded. It is
closely associated with the strong surface recombination and the high phosphorus
diffusion barrier induced by the microporous textures. These results are interesting
for us to understand the application of nanotechnology on the silicon solar cell.

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