Onset of exciton-exciton annihilation in single layer black phosphorus

Autor:	Surrente, A., Mitioglu, A. A., Galkowski, K., Klopotowski, L., Tabis, W., Vignolle, B., Maude, D. K., Plochocka, P.
Rok vydání:	2016
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 94, 075425 (2016)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.94.075425
Popis:	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. Comment: 6 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1605.06998 Zobrazit plný text záznamu View this record from Arxiv