Relationship between Device Performance and Grain Boundary Structural Configuration in a Solar Cell Based on Multicrystalline SiGe

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概要

• 論文の詳細を見る

• The grain boundary character distribution of multicrystalline SiGe (mc-SiGe) solar cells with microscopic compositional distribution was revealed to have a significant effect on the photovoltaic performance of solar cells. This was clarified by comparing the photovoltaic performance of small-area (${\approx}0.02$ cm2) solar cells fabricated in a large-area solar cell with their local structures. With increasing fraction of random grain boundaries in a small-area solar cell, the conversion efficiency was found to decrease. On the other hand, $\Sigma 3$ grain boundaries are found to be dominant in a solar cell with good performance. These results suggest that the development of a crystal growth technique that fully controls the grain boundary character distribution is the key to improving the conversion efficiency of the solar cell based on multicrystalline semiconductors.

• Japan Society of Applied Physicsの論文
• 2004-02-15

著者

• Usami Noritaka

  Institute For Material Research Tohoku University

• Pan Wugen

  Institute For Materials Research (imr) Tohoku University

• Fujiwara Kozo

  Institute For Materials Research (imr) Tohoku University

• Ujihara Toru

  Institute For Materials Research (imr) Tohoku University

• Sazaki Gen

  Institute For Materials Research (imr) Tohoku University

• Nakajima Kazuo

  Institute for Materials Reseach, Tohoku University, 2-1-1 Katahira-cho, Aoba-ku, Sendai 980-8577, Japan

• Pan Wugen

  Institute for Materials Research (IMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

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