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- W4287904052 abstract "We investigate the response of excitons in two-dimensional semiconductors subjected to controlled non-uniform strain fields. In our approach to non-uniform strain-engineering, a WS$_2$ monolayer is suspended over a triangular hole. Large ($>2;%$), strongly non-uniform ($>0.28;%/mu m$), and in-situ tunable strain is induced in the monolayer by pressurizing it with inert gas. We observe peak shifts and spectral shape changes in the photoluminescence spectra of strained WS$_2$. We interpret these changes as a signature of increased free electron density and resulting conversion of neutral excitons to trions in the region of high strain. Our result establishes non-uniform strain engineering as a novel and useful experimental `knob' for tuning optoelectronic properties of 2D semiconductors." @default.
- W4287904052 created "2022-07-26" @default.
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- W4287904052 date "2020-01-15" @default.
- W4287904052 modified "2023-09-29" @default.
- W4287904052 title "Neutral and charged excitons interplay in non-uniformly strain-engineered WS$_2$" @default.
- W4287904052 doi "https://doi.org/10.48550/arxiv.2001.05481" @default.
- W4287904052 hasPublicationYear "2020" @default.
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