Fundamental Efficiency Limits of Transition-Metal Dichalcogenide Solar Cells with Carrier Multiplication and Hot-Carrier Effects
Abstract
≃ 1.3 eV shifts toward ∼1.0 eV, with reversible efficiencies above 50%. CM does not raise the reversible HC limit; at finite κ, it only redistributes part of the same excess photon energy into collected current. Monolayer TMDs show negligible CM benefit, whereas bulk-like TMDs can exhibit large HC gains only when electron-phonon cooling is strongly suppressed. These results identify narrow-bandgap, optically strong TMDs as the more plausible beyond-SQ route.
Fields of Study & Subjects
Chalcogenide Semiconductor Thin Films
solar cell performance optimization
Silicon and Solar Cell Technologies
Publication details
- Journal / source
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Volume
- 26
- Issue
- 25
- Pages
- 8378–8384
- Publication date
- 28 May 2026
- Language
- EN