Two-Dimensional Metal–Chalcogenide Films in Tunable Optical Microcavities

Two-Dimensional Metal–Chalcogenide Films in Tunable Optical Microcavities

Integration of quasi-two-dimensional (2D) films of metal–chalcogenides in optical microcavities permits new photonic applications of these materials. Here we present tunable microcavities with monolayer MoS2 or few monolayer GaSe films. We observe significant modification of spectral and temporal pr...

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Veröffentlicht in:Nano letters 2014-12, Vol.14 (12), p.7003-7008
Hauptverfasser: Schwarz, S, Dufferwiel, S, Walker, P. M, Withers, F, Trichet, A. A. P, Sich, M, Li, F, Chekhovich, E. A, Borisenko, D. N, Kolesnikov, N. N, Novoselov, K. S, Skolnick, M. S, Smith, J. M, Krizhanovskii, D. N, Tartakovskii, A. I
Format: Artikel
Sprache:eng
Schlagworte:
Gallium selenides
Letter
Microcavities
Molybdenum disulfide
Monolayers
Photonics
Spectral emissivity
Spectral emittance
Two dimensional
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Zusammenfassung:Integration of quasi-two-dimensional (2D) films of metal–chalcogenides in optical microcavities permits new photonic applications of these materials. Here we present tunable microcavities with monolayer MoS2 or few monolayer GaSe films. We observe significant modification of spectral and temporal properties of photoluminescence (PL): PL is emitted in spectrally narrow and wavelength-tunable cavity modes with quality factors up to 7400; a 10-fold PL lifetime shortening is achieved, a consequence of Purcell enhancement of the spontaneous emission rate.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl503312x