Due to the quantum confinement effect,atomically thin two-dimensional(2D)monolayer materials possess distinct characteristics from their corresponding bulk materials,which have received wide attention from science and...Due to the quantum confinement effect,atomically thin two-dimensional(2D)monolayer materials possess distinct characteristics from their corresponding bulk materials,which have received wide attention from science and industry.Among all the 2D materials,elemental 2D materials with the simplest components are most striking.As an emerging group-VIA elemental 2D monolayer material,tellurene exhibits many exciting fundamental properties,such as chemical and mechanical stabilities,bandgap and high carrier mobilities compared to phosphorene,graphene and MoS2,respectively.Besides,in further exploration,it was found that tellurene or tellurene-based device presents excellent thermoelectric properties,piezoelectric properties,quantum Hall effects,and superb optical properties especially nonlinear optics characteristics,etc.The properties of tellurene can be modulated by virtue of strain,defects,edges,and heterojunction effects.In view of so many unique properties,it has drawn significant interest since tellurene was predicted and fabricated successfully in 2017.In this paper,we review the 2D tellurene allotropes,experimental preparation,excellent properties,performance modulation and future development.展开更多
基金supported partly by the National Natural Science Foundation of China(Grant Nos.11804082 and 11774078)by the Foundation of Henan Educational Committee(Grant No.18A140018)by the Doctoral Foundation of Henan Polytechnic University(B2018-37).
文摘Due to the quantum confinement effect,atomically thin two-dimensional(2D)monolayer materials possess distinct characteristics from their corresponding bulk materials,which have received wide attention from science and industry.Among all the 2D materials,elemental 2D materials with the simplest components are most striking.As an emerging group-VIA elemental 2D monolayer material,tellurene exhibits many exciting fundamental properties,such as chemical and mechanical stabilities,bandgap and high carrier mobilities compared to phosphorene,graphene and MoS2,respectively.Besides,in further exploration,it was found that tellurene or tellurene-based device presents excellent thermoelectric properties,piezoelectric properties,quantum Hall effects,and superb optical properties especially nonlinear optics characteristics,etc.The properties of tellurene can be modulated by virtue of strain,defects,edges,and heterojunction effects.In view of so many unique properties,it has drawn significant interest since tellurene was predicted and fabricated successfully in 2017.In this paper,we review the 2D tellurene allotropes,experimental preparation,excellent properties,performance modulation and future development.
