Surface plasmon enhancement in different spatial distributions of nanowires and two-dimensional materials

Literature Information

Publication Date 2022-03-10
DOI 10.1039/D1CP05982C
Impact Factor 3.676
Authors

Chen Zhou, Wei Xue


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Abstract

Surface plasmon (SP) nanostructures have been widely researched to improve the low light absorption of two-dimensional transition metal dichalcogenides (TMDCs). However, the impact of their different coupling forms, which is essential for the optimization of nanostructures, has been rarely investigated. Here, we construct two different spatially distributed composite structures of Ag nanowires (NWs) and monolayer (1L) molybdenum disulfide (MoS2). When the Ag NW was buried under 1L MoS2, the formed tiny optical cavity can further promote the light utilization of 1L MoS2, so that the spectral enhancement by SP was stronger than that when the Ag NW was placed on the top of 1L MoS2. In addition, the photoresponsivity and light response speed of the phototransistor based on the composite structure with Ag NWs buried underneath were improved by ∼5-fold and ∼1000-fold, respectively, compared to those of the pristine 1L MoS2 phototransistor. This research provides a reference for the optimization of SP nanostructures to enhance the optoelectronic properties of two-dimensional materials.

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Contents list

Front/Back Matter

DOI: 10.1039/C4PY90057J

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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