Two-dimensional metal-chalcogenide films in tunable optical microcavities
American Chemical Society
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.
We thank the financial support of FP7 ITN S3NANO, ERC grant EXCIPOL 320570, the EPSRC Programme Grant EP/J007544/1, and Graphene Flagship grant 604391. A.A.P.T., M.S., D.N.K. and J.M.S. acknowledge support from the Leverhulme Trust. K.S.N. was supported by ERC and the Royal Society. F.W. was supported by the Royal Academy of Engineering. D.N.B. and N.N.K. acknowledge support by DPS RAS project II-5-B5.
This is the author accepted manuscript. The final version is available from the American Chemical Society via the DOI in this record.
Vol. 14 (12), pp. 7003 - 7008
Place of publication