Electrical control of interlayer exciton dynamics in atomically thin heterostructures
Abstract
Excitons—bound pairs of electrons and holes in a solid—can, in principle, be used as information carriers. However, their lifetime is limited because the electrons and holes tend to quickly recombine. One way to extend this lifetime is to physically separate electrons and holes—for example, by having them reside in different layers of a van der Waals heterostructure. Jauregui et al. used this strategy to form long-lived interlayer excitons in a heterostructure made out of monolayers of molybdenum diselenide (MoSe 2 ) and tungsten diselenide (WSe 2 ). Through electrical control of the layers in the heterostructure, the researchers further increased exciton lifetime and formed and manipulated charged excitons.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 15, 2019
- Source ID
- 10.1126/science.aaw4194
Entities
People
- Alexander A. High
- Andrew Y Joe
- Andrey Sushko
- Che-Hang Yu
- Daniel J. Needleman
- Dominik S Wild
- Giovanni Scuri
- Hongkun Park
- Kateryna Pistunova
- Kenji Watanabe
- Kristiaan De Greve
- Luis Jáuregui
- Mikhail Lukin
- Philip Kim
- Takashi Taniguchi
- You Zhou
Organizations
- Air Force Office of Scientific Research
- Core Research for Evolutional Science and Technology
- Gordon and Betty Moore Foundation
- Harvard University
- National Institute for Materials Science
- National Science Foundation
- Samsung Group
- United States Army Research Laboratory
- United States Department of Defense