Xueting Zhang, Qing Dong, Zonglun Li, et al. Significant pressure-induced enhancement of photoelectric properties of WS2 in the near-infrared region[J]. Materials Research Letters, 2022, 10(8): 547-555.
DOI:
Xueting Zhang, Qing Dong, Zonglun Li, et al. Significant pressure-induced enhancement of photoelectric properties of WS2 in the near-infrared region[J]. Materials Research Letters, 2022, 10(8): 547-555.DOI: 10.1080/21663831.2022.2065893.
Significant pressure-induced enhancement of photoelectric properties of WS2 in the near-infrared region
-based photodetector is fabricated and its detection range is extended to optical communication waveband by pressure. At ambient pressure
WS
2
exhibits a fast photoelectric response speed (rising/decaying time: 35/49 μs) under 635 nm laser illumination. Upon compression
the responsiveness and external quantum efficiency increase by two orders of magnitude under NIR illumination with different wavelengths as the pressure increases up to 17.2 GPa. The pressure-induced band gap reduction is mainly ascribed to the enhanced S-S interlayer interaction
leading to significant enhancement in the WS
2
photoresponsiveness. This study paves the way for designing high-performance broadband photodetectors through pressure modification.
IMPACT STATEMENT
Fast photoelectric response speed and extended detection range were achieved in the WS
2
-based photodetector via pressure modulation
which paves a new way for designing high-performance broadband photodetectors.
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Related Author
Bo Zou
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Related Institution
d State Key Laboratory of Supermolecular Structure and Materials College of Chemistry Jilin University
c Key Laboratory of Organosilicon Chemistry and Material Technology Ministry of Education College of Material Chemistry and Chemical Engineering Hangzhou Normal University
b School of Basic Education Beijing Institute of Graphic Communication
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