Exciton Diffusion and Halo Effects in Monolayer Semiconductors

URN to cite this document:: urn:nbn:de:bvb:355-epub-406013
DOI to cite this document:: 10.5283/epub.40601

Kulig, Marvin ; Zipfel, Jonas ; Nagler, Philipp ; Blanter, Sofia ; Schüller, Christian ; Korn, Tobias

; Paradiso, Nicola

; Glazov, Mikhail M.

; Chernikov, Alexey

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Date of publication of this fulltext: 30 Jul 2019 13:37

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Abstract

We directly monitor exciton propagation in freestanding and SiO2-supported WS2 monolayers through spatially and time-resolved microphotoluminescence under ambient conditions. We find a highly nonlinear behavior with characteristic, qualitative changes in the spatial profiles of the exciton emission and an effective diffusion coefficient increasing from 0.3 to more than 30 cm(2)/s, depending on ...