Two-dimensional Janus van der Waals heterojunctions:A review of recent research progresses

• 作者: Lin Ju Mei Bie Xiwei Zhang Xiangming Chen Liangzhi Kou
• 来源期刊: 物理学前沿
• 年，卷（期）: 2021,（1）
• 所属期刊栏目: Special Collection:Heterojunction and Its Applications(Ed.Changhua Sun)
• 页码范围: 1-16
• 页数: 16页
• 语种: 英文

摘要

Two-dimensional Janus van der Waals (vdW) heterojunctions,referring to the junction containing at least one Janus material,are found to exhibit tuneable electronic structures,wide light adsorption spectra,controllable contact resistance,and sufficient redox potential due to the intrinsic polarization and unique interlayer coupling.These novel structures and properties are promising for the potential applications in electronics and energy conversion devices.To provide a comprehensive picture about the research progress and guide the following investigations,here we summarize their fundamental properties of different types of two-dimensional Janus vdW heterostructures including electronic structure,interface contact and optical properties,and discuss the potential applications in electronics and energy conversion devices.The further challenges and possible research directions of the novel heterojunctions are discussed at the end of this review.