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The flexural strengths of silicon substrates with various surface morphologies for silicon solar cells

Authors
Lee, J.S.Kwon, S.Park, H.Kim, Y.D.Kim, H.-J.Lim, H.Yoon, S.Kim, D.
Issue Date
2009
Keywords
Flexural strength; Silicon; Solar cell; Texturing
Citation
Korean Journal of Materials Research, v.19, no.1, pp.18 - 23
Indexed
SCOPUS
KCI
Journal Title
Korean Journal of Materials Research
Volume
19
Number
1
Start Page
18
End Page
23
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/121861
DOI
10.3740/MRSK.2009.19.1.018
ISSN
1225-0562
Abstract
The influence of various surface morphologies on the mechanical strength of silicon substrates was investigated in this study. The yield for the solar cell industry is mainly related to the fracturing of silicon wafers during the manufacturing process. The flexural strengths of silicon substrates were influenced by the density of the pyramids as well as by the size and the rounded surface of the pyramids. To characterize and optimize the relevant texturing process in terms of mechanical stability and the fabrication yield, the mechanical properties of textured silicon substrates were investigated to optimize the size and morphology of random pyramids. Several types of silicon substrates were studied, including the planar type, a textured surface with large and small pyramids, and a textured surface with rounded pyramids. The surface morphology and a cross-section of the as-textured and fractured silicon substrates were investigated by scanning electron microscopy.
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공과대학 (신소재공학부)
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