CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 11278 > Article
Presentation
10 March 2020 Ultrafast charge transfer in heterostructures of 2D materials (Conference Presentation)
Stefano Dal Conte, Chiara Trovatello, Zilong Wang, Giulio N. Cerullo
Author Affiliations +
Proceedings Volume 11278, Ultrafast Phenomena and Nanophotonics XXIV; 112781B (2020) https://doi.org/10.1117/12.2544386
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
We use ultrafast spectroscopy to resolve the interlayer charge scattering processes in heterostructures (HS) of two-dimensional materials. In a WSe2/MoSe2 HS we photogenerate intralayer excitons in MoSe2 and observe hole injection in WSe2 on the sub-picosecond timescale, leading to the formation of interlayer excitons. The temperature dependence of the build-up and decay of interlayer excitons provide insights into the coupling mechanisms. In a graphene/WS2 HS we observe ultrafast charge transfer from graphene to the semiconductor. The data are consistent with hot electron/hole transfer, whereby a tail the hot Fermi-Dirac carrier distribution in graphene tunnels through the Schottky barrier into WS2.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Stefano Dal Conte, Chiara Trovatello, Zilong Wang, and Giulio N. Cerullo "Ultrafast charge transfer in heterostructures of 2D materials (Conference Presentation)", Proc. SPIE 11278, Ultrafast Phenomena and Nanophotonics XXIV, 112781B (10 March 2020); https://doi.org/10.1117/12.2544386
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
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
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Heterojunctions
Ultrafast phenomena
Excitons
Graphene
Spectroscopy
Absorption
Absorption spectroscopy
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top