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Energy Storage Devices Based on 2D Phosphorene as an Electrode Material
Published in Krishan Arora, Suman Lata Tripathi, Sanjeevikumar Padmanaban, Smart Electrical Grid System, 2023
A. Gomathi, T. Prabhuraj, P. Maadeswaran, K. A. Ramesh Kumar
Two-dimensional semiconductors belonging to group-VA due to their superior carrier transport characteristics have led to their possible use in electrical and optoelectronic devices. It is universally acknowledged that mobility calculations are used to assess carrier transport properties [11].
Recent advances in neuromorphic transistors for artificial perception applications
Published in Science and Technology of Advanced Materials, 2023
Furthermore, a two-dimensional field-effect transistor based on back-gate structure can adjust channel current, which makes it possible to realize the simulation of synaptic plasticity. With highly gate-modulated and photosensitive of two-dimensional semiconductor material indium selenide (InSe), Nie et al. [92] fabricated a carrier-capture-assisted optoelectronic neuromorphic device based on van der Waals materials with back-gate structure, as shown in Figure 4(a). Owing to the trap capture/release characteristics of InSe/SiO2 interface, the highly gate-modulated photoresponse supported the emulation of effective/stable/ineffective feature. The device demonstrate STP, LTP and PPF behaviors. Tuned with photic stimulus, drug-related synaptic plasticity and medicine-acting metaplasticity were emulated.
Sensitivity enhancement of fiber surface plasmon resonance (SPR) sensor based upon a gold film-hexagonal boron nitride—molybdenum disulfide structure
Published in Instrumentation Science & Technology, 2022
Haizhou Zheng, Jiayang Yang, Qi Wang, Bin Feng, Ruifeng An
Hexagonal boron nitride is a two-dimensional semiconductor whose structure is similar to that of graphene. The boron and nitrogen atoms are arranged in a hexagonal lattice with a high specific surface area. In addition, because of the wide bandgap of hexagonal boron nitride, it can be used as the sensitizing layer of the sensor. As a new two-dimensional material, molybdenum disulfide strengthens the surface plasma wave generated by the metal film, so that the SPR is enhanced and reflected upon the sensor.[20,21] Recent studies have suggested that when using hexagonal boron nitride and molybdenum disulfide together on the SPR sensor, the photoelectric properties of these two materials would be further enhanced.[19] On the other hand, as a traditional SPR precious metal, gold has better oxidation and corrosion resistance than silver and improves the electron transfer efficiency. Therefore, fiber-gold film-molybdenum disulfide-hexagonal boron nitride is proposed to improve the performance of the traditional SPR sensor.
Enhanced photocatalytic performance for ethyl mercaptan by CoO/HTi2NbO7-NS p-n heterojunction nanocomposites
Published in Inorganic and Nano-Metal Chemistry, 2022
Jie He, Tingting Geng, Lifang Hu, Jie Li
HTi2NbO7 nanosheet is a typical two-dimensional semiconductor material. It not only has all the superiority of two-dimensional materials mentioned above but also has a high thermal stability and acid/alkaline resistance. In addition, the affinity of HTi2NbO7 nanosheet is good enough to combine with other metal or metal oxide to form the heterogeneous junctions more easily. Wang et al.[14] built Pt/HTi2NbO7 nanosheet heterojunction material and investigated its photocatalytic activity for H2 evolution. The results showed that the higher dispersity and more closely interface contact between the nanosheets and Pt nanoclusters would promote the transfer of the photogenerated carriers. In our previous study, we prepared a novel heterojunction material CeO2/HTi2NbO7 nanosheet and evaluated its adsorption capacity and photocatalytic oxidation activity. The CeO2/HTi2NbO7 nanosheet nanocomposite owns the best adsorption capacity and photocatalytic oxidation activity duo to the interaction between HTi2NbO7 nanosheet and CeO2.[15] For p-n heterojunction materials, our research group also synthesized several composites, such as Cu2O/HTi2NbO7 nanosheet [16] and NiO/HTi2NbO7 nanosheet,[17] and studied their photocatalytic properties.