Hyperspectral absorption of semiconductor monolayer crystals
Abstract
Quantum many-body theory is applied to discover the design principles of broadband absorbers based on III-nitride or transition metal dichalcogenide monolayer crystals. A combination of color-chirped exciton absorption and continuum-absorption-based coupling strategies is outlined and demonstrated to enable hyperspectral absorption with several eV bandwidth. The found structures are only a few micrometers thick and dominantly support direct generation of free carriers at optimal photovoltages.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 04, 2020
- Source ID
- 10.1063/5.0004119
Entities
People
- D. Bayerl
- David Laleyan
- Emmanouil Kioupakis
- M Kira
- Ping Wang
- Qiannan Wen
- Yipeng Wu
- Zetian Mi
Organizations
- Army Research Office
- University of Michigan