Exciton funnelling due to non-homogeneous strain was previously thought of as an efficient neutral exciton transport mechanism. New findings suggest that exciton funnelling might be negligible compared with another strain-dependent process, the conversion of neutral excitons into trions.
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Frisenda, R., Castellanos-Gomez, A. Strain creates a trion factory. Nat. Photonics 14, 269–270 (2020). https://doi.org/10.1038/s41566-020-0625-x
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