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- W4225283758 abstract "Abstract In this work a novel sustainable, self‐driven UV photodetection system using ternary transition metal dichalcogenide (TMDC) alloy (Mo x W 1− x S 2 ) is proposed by coupling a photodetector as a light intensity sensor and a piezoelectric nanogenerator (PENG) as a power source. Crystalline Mo x W 1− x S 2 ternary alloy nanosheets are synthesized via cost effective hydrothermal method to fabricate a UV (365 nm) photodetector with extraordinary high responsivity (≈229 A W ‐1 ). The microstructural, optical properties of different ternary alloy composition, along with their binary counterparts, have been studied. The optimized Mo 0.5 W 0.5 S 2 ternary alloy nanosheets are used as fillers in PVDF matrix to fabricate flexible self‐polled PENGs, exhibiting piezoelectric open‐circuit output ≈50 V under finger tapping and a record high piezo‐voltage ≈187 V under impact of 12 kPa. By coupling the two devices, the output voltage of the PENG is tuned by the resistance of the photodetector, exhibiting superior voltage sensitivity (≈0.75 V µW ‐1 cm ‐2 ) with UV illumination. The impedance matching between the PENG and photodetector has been utilized to demonstrate self‐powered UV sensors by monitoring the on/off states of light‐emitting diode directly. This self‐powered, portable ternary TMDC alloy device is attractive for future real‐time monitoring of UV radiation and smart health sensors for IOT applications." @default.
- W4225283758 created "2022-05-05" @default.
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- W4225283758 date "2022-05-02" @default.
- W4225283758 modified "2023-10-10" @default.
- W4225283758 title "Two‐Dimensional Mo<sub><i>x</i></sub>W<sub>1−<i>x</i></sub>S<sub>2</sub> Alloys for Nanogenerators Producing Record Piezo‐Output and Coupled Photodetectors for Self‐Powered UV Sensor" @default.
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- W4225283758 doi "https://doi.org/10.1002/adom.202200353" @default.
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