Journal
NANOTECHNOLOGY
Volume 32, Issue 31, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/abf5ff
Keywords
graphene; MoS2; heterostructure; photodetectors; seamless
Funding
- National Natural Science Foundation of China [51972073]
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The study introduces a mechanically stable, highly responsive, and flexible photodetector by integrating MoS2 and all-carbon transistors, improving photoresponse performance and enhancing electrical stability under mechanical deformation. The heterostructure photodetector shows promise for flexible photodetection and photoimaging applications.
Heterostructures of graphene and transition-metal dichalcogenides (TMDCs) are promising candidates for high-performance flexible photodetectors because of their high photoresponsivity and detectivity. However, the mechanical stability of current flexible photodetectors is limited, due to a mechanical mismatch between their two-dimensional channel materials and metallic contacts. Herein, we develop a type of mechanically stable, highly responsive, and flexible photodetector by integrating MoS2 and all-carbon transistors. By combining the high mobility of graphene with the strong light-matter interactions of MoS2, our heterostructure photodetector exhibits a greatly improved photoresponse performance, compared with individual graphene or MoS2 photodetectors. In addition, the mechanical properties of the all-carbon electrodes are a good match for those of the active two-dimensional channels, resulting in greatly improved electrical stability of the heterostructure photodetector under mechanical deformation. These capabilities make our heterostructure photodetector a promising candidate for flexible photodetection and photoimaging applications.
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