期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 18, 页码 11548-11556出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b10247
关键词
electrochemical exfoliation; black phosphorus; humidity sensor; photodetector
资金
- Department of Science and Technology (Government of India) under Ramanujan Fellowship [SR/S2/RJN-130/2012]
- CSIR-NCL-MLP project [028626]
- DST-SERB Fast-track Young scientist project [SB/FT/CS-116/2013]
- Broad of Research in Nuclear Sciences (BRNS) (Government of India) [34/14/20/2015]
- INUP IITB project - DeitY, MCIT, Government of India
- JNCASR
- ICMS Bangalore (India)
Recent investigations on two-dimensional black phosphorus material mainly highlight work on few atomic layers and multilayers. It is still unknown if the black phosphorus atomically thin sheet is an ideal structure for the enhanced gas solid interactions due to its large surface area. To further investigate this concern, we have synthesized few atomic layer thick nanosheets of black phosphorus using an electrochemical exfoliation method. The surface morphology and thickness of the nanosheet were identified using AFM, TEM, and Raman spectroscopy. The black phosphorus nanosheet thick film device was used for the gas sensing application with exposure to different humidites. Further, the few layer black phosphorus nanosheet based transistor shows good mobility and on/off ratio. The UV light irradiation on the black phosphorus nanosheet shows good response time. The overall results show that the few layer thick film of black phosphorus nanosheets sample exhibits creditable sensitivity and better recovery time to be used in humidity sensor and photodetector applications.
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