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- W2801391279 startingPage "16874" @default.
- W2801391279 abstract "Two-dimensional (2D) semiconductors, particularly the direct-gap monolayer transition metal dichalcogenides (TMDs), are currently being developed for various atomically thin optoelectronic devices. However, practical applications are hindered by their low quantum efficiencies in light emissions and absorptions. While photonic cavities and metallic plasmonic structures can significantly enhance the light-matter interactions in TMDs, the narrow spectral resonance and the local hot spots considerably limit the applications when broadband and large area are required. Here, we demonstrate that a properly designed distributed Bragg reflector (DBR) can be an ideal platform for light-coupling enhancement in 2D TMDs. The main idea is based on engineering the amplitude and phase of optical reflection from the DBR to produce optimal substrate-induced interference. We show that the photoluminescence, Raman, and second harmonic generation signals of monolayer WSe2 can be enhanced by a factor of 26, 34, and 58, respectively. The proposed DBR substrates pave the way for developing a range of 2D optoelectronic devices for broadband and large-area applications." @default.
- W2801391279 created "2018-05-17" @default.
- W2801391279 creator A5007939653 @default.
- W2801391279 creator A5033958102 @default.
- W2801391279 creator A5069982774 @default.
- W2801391279 creator A5071055976 @default.
- W2801391279 date "2018-04-24" @default.
- W2801391279 modified "2023-10-16" @default.
- W2801391279 title "Distributed Bragg Reflectors as Broadband and Large-Area Platforms for Light-Coupling Enhancement in 2D Transition-Metal Dichalcogenides" @default.
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- W2801391279 doi "https://doi.org/10.1021/acsami.8b02845" @default.
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- W2801391279 hasPublicationYear "2018" @default.
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