期刊
NATURE COMMUNICATIONS
卷 11, 期 1, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-020-17296-0
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资金
- Australian Research Council (ARC) [DP180102752]
- ARC [DP170102138]
- ARC Centre of Excellence FLEET [CE170100039]
- ARC DECRA scheme [DE190100100]
- ARC Centre of Excellence in Exciton Science [CE170100026]
- ARC Laureate Fellowship [FL180100053]
The predicted strong piezoelectricity for monolayers of group IV monochalcogenides, together with their inherent flexibility, makes them likely candidates for developing flexible nanogenerators. Within this group, SnS is a potential choice for such nanogenerators due to its favourable semiconducting properties. To date, access to large-area and highly crystalline monolayer SnS has been challenging due to the presence of strong inter-layer interactions by the lone-pair electrons of S. Here we report single crystal across-the-plane and large-area monolayer SnS synthesis using a liquid metal-based technique. The characterisations confirm the formation of atomically thin SnS with a remarkable carrier mobility of similar to 35 cm(2 )V(-1) s(-1) and piezoelectric coefficient of similar to 26 pm V-1. Piezoelectric nanogenerators fabricated using the SnS monolayers demonstrate a peak output voltage of similar to 150 mV at 0.7% strain. The stable and flexible monolayer SnS can be implemented into a variety of systems for efficient energy harvesting.
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