期刊
ADVANCED FUNCTIONAL MATERIALS
卷 27, 期 18, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201606834
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资金
- National Natural Science Foundation of China [11504312, 61435010, 61675135]
- Science and Technology Innovation Commission of Shenzhen [JCYJ20150625103619275]
- Provincial Natural Science Foundation of Hunan [2016JJ2132]
- Open Fund based on innovation platform of Hunan Colleges and Universities [15K128]
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Fund [GD201404]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT13093]
Large-size 2D black phosphorus (BP) nanosheets have been successfully synthesized by a facile liquid exfoliation method. The as-prepared BP nanosheets are used to fabricate electrodes for a self-powered photodetector and exhibit preferable photoresponse activity as well as environmental robustness. Photoelectrochemical (PEC) tests demonstrate that the current density of BP nanosheets can reach up to 265 nA cm(-2) under light irradiation, while the dark current densities fluctuate near 1 nA cm(-2) in 0.1 M KOH. UV-vis and Raman spectra are carried out and confirm the inherent optical and physical properties of BP nanosheets. In addition, the cycle stability measurement exhibits no detectable distinction after processing 50 and 100 cycles, while an excellent on/off behavior is still preserved even after one month. Furthermore, the PEC performance of BP nanosheets-based photodetector is evaluated in various KOH concentrations, which demonstrates that the as-prepared BP nanosheets may have a great potential application in self-powered photodetector. It is anticipated that the present work can provide fundamental acknowledgement of the performance of a PEC-type BP nanosheets-based photodetector, offering extendable availabilities for 2D BP-based heterostructures to construct high-performance PEC devices.
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