TY - JOUR
T1 - Emerging Group-VI Elemental 2D Materials: Preparations, Properties, and Device Applications
AU - Lin, Ziyuan
AU - Wang, Cong
AU - Chai, Yang
N1 - Funding Information:
This work was supported by the Research Grant Council of Hong Kong (No. PolyU 152053/18E) and The Project Supported by Shenzhen Science and Technology Innovation Commission (No. JCYJ20180507183424383).
Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2020/10/15
Y1 - 2020/10/15
N2 - Due to the ultrathin thickness and dangling-bond-free surface, 2D materials have been regarded as promising candidates for future nanoelectronics. In recent years, group-VI elemental 2D materials have been rediscovered and found superior in electrical properties (e.g., high carrier mobility, high photoconductivity, and thermoelectric response). The outstanding semiconducting properties of group-VI elemental 2D materials enable device applications including high-performance field-effect transistors and optoelectronic devices. The excellent environmental stability also facilitates fundamental studies and practical applications of group-VI elemental 2D materials. This Review first focuses on the crystal structures of group-VI elemental 2D materials. Afterward, preparation methods for nanostructures of group-VI materials are introduced with comprehensive studies. A brief Review of the electronic structures is then presented with an understanding of the electrical properties. This Review also contains the device applications of group-VI elemental 2D materials, emphasizing transistors, photodetectors, and other appealing applications. Finally, this Review provides an outlook for the development of group-VI elemental 2D materials, highlighting the challenges and opportunities in fundamental studies and technological applications.
AB - Due to the ultrathin thickness and dangling-bond-free surface, 2D materials have been regarded as promising candidates for future nanoelectronics. In recent years, group-VI elemental 2D materials have been rediscovered and found superior in electrical properties (e.g., high carrier mobility, high photoconductivity, and thermoelectric response). The outstanding semiconducting properties of group-VI elemental 2D materials enable device applications including high-performance field-effect transistors and optoelectronic devices. The excellent environmental stability also facilitates fundamental studies and practical applications of group-VI elemental 2D materials. This Review first focuses on the crystal structures of group-VI elemental 2D materials. Afterward, preparation methods for nanostructures of group-VI materials are introduced with comprehensive studies. A brief Review of the electronic structures is then presented with an understanding of the electrical properties. This Review also contains the device applications of group-VI elemental 2D materials, emphasizing transistors, photodetectors, and other appealing applications. Finally, this Review provides an outlook for the development of group-VI elemental 2D materials, highlighting the challenges and opportunities in fundamental studies and technological applications.
KW - crystal structures
KW - electrical properties
KW - group-VI 2D materials
KW - nanoelectronics
KW - preparations
UR - http://www.scopus.com/inward/record.url?scp=85089401755&partnerID=8YFLogxK
U2 - 10.1002/smll.202003319
DO - 10.1002/smll.202003319
M3 - Review article
C2 - 32797721
AN - SCOPUS:85089401755
SN - 1613-6810
VL - 16
JO - Small
JF - Small
IS - 41
M1 - 2003319
ER -