Light trapping of crystalline Si solar cells by use of nanocrystalline Si layer plus pyramidal texture

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• 作者：Kentaro Imamura ; Takaaki Nonaka ; Yuya Onitsuka ; Daichi Irishika ; Hikaru Kobayashi ; ^{h.kobayashi@sanken.osaka-u.ac.jp}
• 关键词：Si solar cells ; Texture ; Light trapping ; Nanocrystalline Si layer ; Low reflectivity
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：395
• 期：Complete
• 页码：50-55
• 全文大小：1526 K
• 卷排序：395

文摘

Ultralow reflectivity Si wafers with light trapping effect can be obtained by forming a nanocrystalline Si layer on pyramidal textured Si surfaces. Surface passivation using phosphosilicate glass improved minority carrier lifetime of the nanocrystalline Si layer/Si structure. A high photocurrent density of 40.1 mA/cm2, and a high conversion efficiency of 18.5% were achieved.