Back to Search
Start Over
Onset of exciton-exciton annihilation in single layer black phosphorus
- Source :
- Phys. Rev. B 94, 075425 (2016)
- Publication Year :
- 2016
-
Abstract
- The exciton dynamics in monolayer black phosphorus is investigated over a very wide range of photoexcited exciton densities using time resolved photoluminescence. At low excitation densities, the exciton dynamics is successfully described in terms of a double exponential decay. With increasing exciton population, a fast, non-exponential component develops as exciton-exciton annihilation takes over as the dominant recombination mechanism under high excitation conditions. Our results identify an upper limit for the injection density, after which exciton-exciton annihilation reduces the quantum yield, which will significantly impact the performance of light emitting devices based on single layer black phosphorus.<br />Comment: 6 pages, 5 figures
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 94, 075425 (2016)
- Publication Type :
- Report
- Accession number :
- edsarx.1605.06998
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.94.075425