期刊
ADVANCED OPTICAL MATERIALS
卷 6, 期 21, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.201800420
关键词
2D transition metal dichalcogenides; excitons; heterojunctions; light emission; PL enhancement
资金
- National Natural Science Foundation of China [51525202, 51772084, 61574054, 61505051]
- Aid program for Science and Technology Innovative Research Team in Higher Educational Institutions of the Hunan Province [2017RS3027]
2D transition metal dichalcogenides (2D TMDs) with energy bandgaps covering the visible and near infrared spectral region have enormous advantages in various photonic and optoelectronic applications, such as light emitting devices, transistors, photovoltaic devices, photodetectors, and nanocavity lasers. Understanding the mechanisms and controlling the optical properties of 2D TMDs is of crucial importance for further applications in integrated photonics. This review focuses on the light emission properties of 2D TMDs and their heterojunctions (HJs), including the fundamentals, tunability, and device applications. The band structures and excitonic properties related to light emission in 2D TMDs are discussed. The approaches to control, tune, and enhance light emission are also discussed. Subsequently, the light emission phenomena in 2D TMD HJs and their mechanisms associated with interlayer exciton, charge transfer, and energy transfer processes are described. Finally, the future potentials and challenges in TMD photonics are presented.
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