2-inch single-crystal MoS₂ monolayer

Li, Lu; Wang, Qinqin; Wu, Fanfan; Xu, Qiaoling; Tian, Jinpeng; Huang, Zhiheng; Wang, Qinghe; Zhao, Xuan; Zhang, Qinghua; Fan, Qinkai; Li, Xiuzhen; Peng, Yalin; Zhang, Yangkun; Zhi, Aomiao; Huacong, Sun; Zhu, Mingtong; Zhu, Jundong; Lu, Nianpeng; Lu, Ying; Wang, Shuopei; Bai, Xuedong; Xu, Yang; Yang, Wei; Li, Na; Shi, Dongxia; Xian, Lede; Liu, Kaihui; Du, Luojun; Zhang, Guangyu

2-inch single-crystal MoS₂ monolayer

wafer-scale seamless epitaxy

Epitaxial growth of wafer-scale single-crystal MoS₂ monolayers on commercial sapphire substrates enabled by buffer layer control, paving the way for industrial 2D semiconductors.

Li, Lu · Wang, Qinqin · Wu, Fanfan · Xu, Qiaoling · Tian, Jinpeng · Huang, Zhiheng · Wang, Qinghe · Zhao, Xuan · Zhang, Qinghua · Fan, Qinkai · Li, Xiuzhen · Peng, Yalin · Zhang, Yangkun · Zhi, Aomiao · Huacong, Sun · Zhu, Mingtong · Zhu, Jundong · Lu, Nianpeng · Lu, Ying · Wang, Shuopei · Bai, Xuedong · Xu, Yang · Yang, Wei · Li, Na · Shi, Dongxia · Xian, Lede · Liu, Kaihui · Du, Luojun · Zhang, Guangyu

Nature Communications 2024

Specifications

phonon circular dichroism: {'zh': '~100', 'en': '~100'} %
exciton valley polarization: {'zh': '~70', 'en': '~70'} %
room-temperature mobility: {'zh': '~140', 'en': '~140'} cm² V⁻¹

Advantages

2-inch wafer-scale single-crystal MoS₂ monolayer

on/off ratio ~10⁹