Electrical and Optoelectronic Properties of the Nanodevices Composed of Two-Dimensional Materials
Graphene and Molybdenum (IV) Disulfide
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Beschreibung
This thesis focuses on the transport and magneto-transport properties of graphene p-n-p junctions, such as the pronounced quantum Hall effect, a well-defined plateau–plateau transition point, and scaling behavior. In addition, it demonstrates persistent photoconductivity (PPC) in the monolayer MoS2 devices, an effect that can be attributed to random localized potential fluctuations in the devices.
Further, it studies scaling behavior at zeroth Landau level and high performance of fractional values of quantum Hall plateaus in these graphene p-n-p devices. Moreover, it demonstrates a unique and efficient means of controlling the PPC effect in monolayer MoS2. This PPC effect may offer novel functionalities for MoS2-based optoelectronic applications in the future.
This thesis focuses on the transport and magneto-transport properties of graphene p-n-p junctions, such as the pronounced quantum Hall effect, a well-defined plateau–plateau transition point, and scaling behavior. In addition, it demonstrates persistent photoconductivity (PPC) in the monolayer MoS2 devices, an effect that can be attributed to random localized potential fluctuations in the devices.
Further, it studies scaling behavior at zeroth Landau level and high performance of fractional values of quantum Hall plateaus in these graphene p-n-p devices. Moreover, it demonstrates a unique and efficient means of controlling the PPC effect in monolayer MoS2. This PPC effect may offer novel functionalities for MoS2-based optoelectronic applications in the future.
Nominated as an outstanding thesis by National Taiwan University Presents the observation of a plateau–plateau transition point corresponding to zeroth Landau level Demonstrates a unique and efficient means of controlling the PPC (persistent photoconductivity) effect in monolayer MoS2 Introduces the fabrication of transistors using the resistor-free and one-step methods
Autor*in
Cheng-Hua Liu
Themen in »Electrical and Optoelectronic Properties of the Nanodevices Composed of Two-Dimensional Materials«
Quantum Hall effect Plateau-plateau transition Scaling behavior Persistent photoconductivity Zeroth Landau level Resistor-free fabrication method