Infrared interlayer excitons in MoS2/WSe2 van der Waals heterostructures

Ouri Karni

doi:10.1117/12.2577837

5 March 2021 Infrared interlayer excitons in MoS₂/WSe₂ van der Waals heterostructures

Ouri Karni

Proceedings Volume 11684, Ultrafast Phenomena and Nanophotonics XXV; 116840D (2021) https://doi.org/10.1117/12.2577837
Event: SPIE OPTO, 2021, Online Only

Abstract

Heterostructures of monolayers of transition-metal dichalcogenides are considered promising for future ultra-thin opto-electronic applications. They also host intriguing basic phenomena like moiré patterns and correlated electronic states. However, their absorption and emission spectra have so far been restricted to wavelengths shorter than 1000 nm, inaccessible to established technologies in the infra-red like silicon photonics. In this talk I will present the ongoing study of interlayer excitons in WSe2/MoS2 heterostructures. Owing to the large band offset between these materials, their heterostructure features an interlayer exciton emitting light around 1200 nm. This may couple photonic technologies in that range (close to the O-band) to the fundamental phenomena in these heterostructure. I will discuss the comprehensive exploration of the fundamental properties of these excitons such as: tunability, momentum assignment, polarization selection rules, lifetimes, moiré physics, etc.

Conference Presentation

Citation Download Citation

Ouri Karni "Infrared interlayer excitons in MoS₂/WSe₂ van der Waals heterostructures", Proc. SPIE 11684, Ultrafast Phenomena and Nanophotonics XXV, 116840D (5 March 2021); https://doi.org/10.1117/12.2577837

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available