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

Joon Sung Lee, Soonwoo Kwon, Hayoung Park, Young Do Kim, Hyeong Jun Kim, Heejin Lim, Sewang Yoon, Donghwan Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)18-23
Number of pages6
JournalKorean Journal of Materials Research
Volume19
Issue number1
DOIs
Publication statusPublished - 2009 Aug 19

Keywords

  • Flexural strength
  • Silicon
  • Solar cell
  • Texturing

ASJC Scopus subject areas

  • Materials Science(all)

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