Optical manipulation of the exciton charge state in single-layer tungsten disulfide

Mitioglu Anatolie; Płochocka Paulina; Jadczak Joanna N.; Escoffier Walter; Rikken Geert L.J.A.; Kulyuk Leonid; Maude Duncan Kennedy

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172

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MITIOGLU, Anatolie, PŁOCHOCKA, Paulina, JADCZAK, Joanna N., ESCOFFIER, Walter, RIKKEN, Geert L.J.A., KULYUK, Leonid, MAUDE, Duncan Kennedy. Optical manipulation of the exciton charge state in single-layer tungsten disulfide. In: Physical Review B - Condensed Matter and Materials Physics, 2013, vol. 88, pp. 245403-0. ISSN 1098-0121. DOI: https://doi.org/10.1103/PhysRevB.88.245403

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Physical Review B - Condensed Matter and Materials Physics

Volumul 88 / 2013 / ISSN 1098-0121 /ISSNe 1550-235X

Optical manipulation of the exciton charge state in single-layer tungsten disulfide

DOI:https://doi.org/10.1103/PhysRevB.88.245403

Pag. 245403-0

Mitioglu Anatolie¹², Płochocka Paulina¹, Jadczak Joanna N.¹³, Escoffier Walter¹, Rikken Geert L.J.A.¹, Kulyuk Leonid², Maude Duncan Kennedy¹

¹ LNCMI, CNRS-UJF-UPS-INSA, Grenoble and Toulouse,
² Institute of Applied Physics, Academy of Sciences of Moldova,
³ Institute of Physics, Polish Academy of Science, Warsaw

Disponibil în IBN: 21 iunie 2023

Rezumat

Raman scattering and photoluminescence (PL) emission are used to investigate a single layer of tungsten disulfide (WS₂) obtained by exfoliating n-type bulk crystals. Direct gap emission with both neutral and charged exciton recombination is observed in the low temperature PL spectra. The ratio between the trion and exciton emission can be tuned simply by varying the excitation power. Moreover, the intensity of the trion emission can be independently tuned using additional subband gap laser excitation.

Cuvinte-cheie
Molybdenum disulfide, Monolayer, Van Der Waals