Charge carrier transfer in tungsten disulfide—black phosphorus heterostructures
Source abstract
Abstract
Abstract Photocarrier dynamics in tungsten disulfide—black phosphorus (BP) heterostructures were studied by time-resolved differential reflection measurements. The heterostructures were fabricated by stacking together monolayer WS 2 and BP flakes that are both fabricated by mechanical exfoliation. Efficient and ultrafast transfer of photocarriers from WS 2 to BP flakes was observed. This confirms the type-I band alignment of WS 2 /BP heterostructures that was predicted by theory. Accompanied with the photocarrier interlayer transfer process from WS 2 to BP flakes, the change of the absorption of WS 2 persists for several nanoseconds. These results promote the consciousness about the carrier dynamics of interlayer transfer process in van der Waals heterostructures and its application in optoelectronic devices.
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Research context
OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Beijing Jiaotong University
Funding
Initiative Postdocs Supporting Program · General Financial Grant from the China Postdoctoral Science Foundation · National Natural Science Fund Project of China · National Key R&D Program of China
References (43)
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