Monolayer MoS2 Heterojunction Solar Cells

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• 作者：Meng-Lin Tsai ; Sheng-Han Su ; Jan-Kai Chang ; Dung-Sheng Tsai ; Chang-Hsiao Chen ; Chih-I Wu ; Lain-Jong Li ; Lih-Juann Chen ; Jr-Hau He
• 刊名：ACS Nano
• 出版年：2014
• 出版时间：August 26, 2014
• 年：2014
• 卷：8
• 期：8
• 页码：8317-8322
• 全文大小：326K
• ISSN：1936-086X

文摘

We realized photovoltaic operation in large-scale MoS₂ monolayers by the formation of a type-II heterojunction with p-Si. The MoS₂ monolayer introduces a built-in electric field near the interface between MoS₂ and p-Si to help photogenerated carrier separation. Such a heterojunction photovoltaic device achieves a power conversion efficiency of 5.23%, which is the highest efficiency among all monolayer transition-metal dichalcogenide-based solar cells. The demonstrated results of monolayer MoS₂/Si-based solar cells hold the promise for integration of 2D materials with commercially available Si-based electronics in highly efficient devices.

Keywords:

molybdenum disulfide; heterojunction solar cell; 2D material; monolayer; chemical vapor deposition