Author(s): Liu, H (Liu, Hao); Zong, YX (Zong, Yixin); Wang, P (Wang, Pan); Wen, HY (Wen, Hongyu); Wu, HB (Wu, Haibin); Xia, JB (Xia, Jianbai); Wei, ZM (Wei, Zhongming)

Source: JOURNAL OF PHYSICS D-APPLIED PHYSICS Volume: 54 Issue: 5 Article Number: 053001 DOI: 10.1088/1361-6463/abbf75 Published: FEB 4 2021

Abstract: Excitons in van der Waals (vdW) heterostructures exhibit multiple excellent characteristics which in recent years have attracted researchers to make an in-depth exploration. In this review, we briefly introduce vdW heterostructures based on monolayer transition metal dichalcogenides and the emerging exciton characteristics in them, especially the formation of interlayer excitons. Then, we summarize the main results of a recent study about excitons in vdW heterostructures, including a Bose-Einstein condensate state, moire excitons, and the complex exciton dynamics. The applications of excitons in vdW heterostructures are also mentioned, particularly the valley devices, which have a promising outlook. Finally, we point out some problems that exist at present, and give some future research directions.

Accession Number: WOS:000585687200001

ISSN: 0022-3727

eISSN: 1361-6463

Full Text: https://iopscience.iop.org/article/10.1088/1361-6463/abbf75