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Resonantly Increased Optical Frequency Conversion in Atomically Thin Black Phosphorus

TitleResonantly Increased Optical Frequency Conversion in Atomically Thin Black Phosphorus
Publication TypeJournal Article
Year of Publication2016
AuthorsRodrigues, Manuel J. L. F., de Matos Christiano J. S., Ho Yi Wei, Peixoto Helder, de Oliveira Rafael E. P., Wu Hsin-Yu, Neto Antonio H. Castro, and Viana-Gomes Jose
JournalAdv. Mater.
Volume28
Pagination10693–+
Date Published12/2016
ISSN0935-9648
Keywordsband-structure, field-effect transistors, generation, monolayer, MoS2, optoelectronics, photoemission, raman, semiconductor, single-crystals
Abstract

Optical frequency conversion via the nonlinear effect of third harmonic generation is shown to be resonantly enhanced in few-layer black phosphorus. This feature is believed to be a consequence of exciton-related resonance, as the enhancement is strongly correlated with the observation of exciton-recombination photoluminescence. Few-layer thicknesses are obtained both via mechanical exfoliation and laser thinning.

DOI10.1002/adma.201603119

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