Microstructures of Si multicrystals and their impact on minority carrier diffusion length

H. Y. Wang, N. Usami, K. Fujiwara, K. Kutsukake, K. Nakajima

研究成果: Article査読

30 被引用数 (Scopus)

抄録

We carried out a systematic investigation of microstructures in a particular zone of Si multicrystals which shows a strong local variation in minority carrier diffusion length (MCDL). It was found that three typical regions with distinct microstructures correspond to the microscopic origins of the local MCDL difference. The region with perfect twin structure (Σ3 boundaries) has a high MCDL, while the regions with either high-angle grain boundaries (Σ9 and Σ27 boundaries) or sub-grain boundaries (high density dislocation) exhibit lower minority carrier diffusion. The relationships between the microstructures and the corresponding MCDLs are briefly discussed. This study has implications for developing improved Si multicrystals with appropriate microstructure for application in solar cells.

本文言語English
ページ(範囲)3268-3276
ページ数9
ジャーナルActa Materialia
57
11
DOI
出版ステータスPublished - 2009 6

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • ポリマーおよびプラスチック
  • 金属および合金

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