Abstract
Electronic interactions associated with atomic adsorbates on van der Waals layered transition-metal dichalcogenides such as MoS2 can induce massive electronic reconstruction that results in the formation of a metallic phase that exhibits characteristics of a two-dimensional electron gas. The impact and mechanism of quantum confinement and reduced dimensionality on the carrier dynamics in such two-dimensional systems is at present not known, but it is of paramount importance, if they are to find application in optoelectronic devices. Here, we show by a combination of angle-resolved photoemission and advanced X-ray spectroscopies that many-body interactions in reduced dimension drastically shorten carrier lifetimes and reveal how potassium intercalation in MoS2 forces orbital rehybridization to create a two-dimensional electron gas.
Original language | English (US) |
---|---|
Pages (from-to) | 19187-19195 |
Number of pages | 9 |
Journal | Journal of Physical Chemistry C |
Volume | 124 |
Issue number | 35 |
DOIs | |
State | Published - Sep 3 2020 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films