Two-dimensional metal-chalcogenide films in tunable optical microcavities.

Two-dimensional metal-chalcogenide films in tunable optical microcavities.
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DOI:
10.1021/nl503312x
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发表时间:
2014-12-10
期刊:
影响因子:
10.8
通讯作者:
Tartakovskii AI
Tartakovskii AI
中科院分区:
材料科学1区
文献类型:
--
作者:
Schwarz S;Dufferwiel S;Walker PM;Withers F;Trichet AA;Sich M;Li F;Chekhovich EA;Borisenko DN;Kolesnikov NN;Novoselov KS;Skolnick MS;Smith JM;Krizhanovskii DN;Tartakovskii AI

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准二维(2D)的金属硫属化物薄膜的光学微腔集成允许这些材料的新的光子应用。在这里,我们提出了可调微腔单层二硫化钼或几个单层的GaSe膜。我们观察到显着修改的光谱和时间特性的光致发光(PL):PL发射光谱窄,波长可调腔模式的质量因子高达7400,PL寿命缩短10倍,实现了自发发射率的珀塞尔增强的后果。
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.
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