A robust 3D self-powered photoelectrochemical type photodetector based on MoSe2 nanoflower

Wang, Kai; Wu, Jie; Chen, Gexiang; Qiao, Hao; Zhou, Yang; Li, Jun; Qi, Xiang

doi:10.1007/s10854-021-05989-1

Cited by 9 publications

(6 citation statements)

References 42 publications

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“…The bandgap values of MoSe 2 and WSe 2 NSs are 1.55 eV and 1.50 eV, respectively, which is higher than their bulk counterpart as reported in the literature. 53 , 54 This difference in bandgap suggests that the bulk MoSe 2 and WSe 2 are reduced to few-layer-thick NSs. 52 …”

Section: Resultsmentioning

confidence: 99%

A Thrifty Liquid-Phase Exfoliation (LPE) of MoSe2 and WSe2 Nanosheets as Channel Materials for FET Application

Sharma

Dawar

Ojha

et al. 2023

J. Electron. Mater.

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Two-dimensional materials are trending nowadays because of their atomic thickness, layer-dependent properties, and their fascinating application in the semiconducting industry. In this work, we have synthesized MoSe 2 and WSe 2 nanosheets (NSs) via a liquid-phase exfoliation method and investigated these NSs as channel materials in field-effect transistors (FET). The x-ray diffraction (XRD) pattern revealed that the synthesized NSs have a 2H phase with 0.65 nm d -spacing which belongs to the (002) Miller plane. Transmission electron microscopy (TEM) studies revealed that MoSe 2 and WSe 2 have a nanosheet-like structure, and the average lateral dimensions of these NSs are ~ 25 nm and ~ 63 nm, respectively. From Raman spectra, we found that the intensity of the A 1g vibrational mode decreases with the reduction in the number of layers. UV-visible spectroscopy revealed that the bandgap values of MoSe 2 and WSe 2 NSs are 1.55 eV and 1.50 eV, respectively, calculated using the Tauc equation. The output and transfer characteristics of the FET devices reveals that the fabricated FETs have good ohmic contact with the channel material and an ON/OFF current ratio of about 10 2 for both devices. This approach for the fabrication of FET devices can be achieved even without sophisticated fabrication facilities, and they can be applied as gas sensors and phototransistors, among other applications. Graphical Abstract

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Section: Resultsmentioning

confidence: 99%

A Thrifty Liquid-Phase Exfoliation (LPE) of MoSe2 and WSe2 Nanosheets as Channel Materials for FET Application

Sharma

Dawar

Ojha

et al. 2023

J. Electron. Mater.

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“…In 2019, Xie et al [171] demonstrated that 2D non-layered Te NSs displayed excellent PEC behavior from the UV to the visible region in association with excellent PEC stability. In 2021, Qi et al [186] successfully fabricated 3D MoSe 2 nanoflowers by hydrothermal and CVD methods displayed a maximum responsivity (R ph ) about 12.39 µA W −1 and a fast photoresponse time of ≈0.15 s at 0 V under SL due to relatively large specific surface area and complex morphologic structure, as well as outstanding photoresponse stability for two weeks. Apart from these structural designs, in 2021, Zhang et al [165] used PbSe NCs fabricated by a facile LPE approach as active materials to construct high-performance PEC-type photodetectors.…”

Section: Pec Photodetectionmentioning

confidence: 99%

Recent Progress in Interface Engineering of Nanostructures for Photoelectrochemical Energy Harvesting Applications

et al. 2023

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With rapid and continuous consumption of nonrenewable energy, solar energy can be utilized to meet the energy requirement and mitigate environmental issues in the future. To attain a sustainable society with an energy mix predominately dependent on solar energy, photoelectrochemical (PEC) device, in which semiconductor nanostructure‐based photocatalysts play important roles, is considered to be one of the most promising candidates to realize the sufficient utilization of solar energy in a low‐cost, green, and environmentally friendly manner. Interface engineering of semiconductor nanostructures has been qualified in the efficient improvement of PEC performances including three basic steps, i.e., light absorption, charge transfer/separation, and surface catalytic reaction. In this review, recently developed interface engineering of semiconductor nanostructures for direct and high‐efficiency conversion of sunlight into available forms (e.g., chemical fuels and electric power) are summarized in terms of their atomic constitution and morphology, electronic structure and promising potential for PEC applications. Extensive efforts toward the development of high‐performance PEC applications (e.g., PEC water splitting, PEC photodetection, PEC catalysis, PEC degradation and PEC biosensors) are also presented and appraised. Last but not least, a brief summary and personal insights on the challenges and future directions in the community of next‐generation PEC devices are also provided.

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“…Considerable effort has been made to study the H-phase MoS 2 in the fields of electronics, photonics, and photo-catalytic chemistry [21]. Molybdenum selenide (MoSe 2 ) has also been extensively researched due to its strong absorption of sunlight and unique band structure while molybdenum telluride (MoTe 2 ) is gaining interest in electronic and optoelectronic devices [22]. These 2D materials show interesting properties that can be harnessed to remove environmental pollutants by catalysis and adsorption.…”

Section: Introductionmentioning

confidence: 99%

SERS-based detection of efficient removal of organic dyes using molybdenum dichalcogenide nanostructures

Thayil,

Cherukulappurath

2023

Nano Ex.

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In this paper we report a facile method for the removal of organic dyes from aqueous solution using molybdenum dichalcogenide (MoX2; X=S, Se, Te) based nanostructures. The molybdenum dichalcogenide nanostructures were synthesized chemically using the simple hydrothermal method. The samples were characterized by X-ray diffraction, Raman Spectroscopy, UV-Visible spectroscopy and scanning electron microscopy. The as-prepared samples have been utilized as an adsorbent for the removal of common organic dyes such as methylene blue (MB), methyl orange (MO), malachite green (MG), rhodamine B (RhB), rhodamine 6G (R6G) and mixtures of these organic dyes from aqueous solution. It was observed that among the synthesized samples, molybdenum disulfide (MoS2) presented excellent adsorption affinity towards these dyes. In addition, selective adsorption of MB in the presence of MO and RhB was demonstrated. Furthermore, the application of surface-enhanced Raman scattering (SERS) to monitor the degradation of the dyes in the experiments was also investigated.

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A robust 3D self-powered photoelectrochemical type photodetector based on MoSe2 nanoflower

Cited by 9 publications

References 42 publications

A Thrifty Liquid-Phase Exfoliation (LPE) of MoSe2 and WSe2 Nanosheets as Channel Materials for FET Application

A Thrifty Liquid-Phase Exfoliation (LPE) of MoSe2 and WSe2 Nanosheets as Channel Materials for FET Application

Recent Progress in Interface Engineering of Nanostructures for Photoelectrochemical Energy Harvesting Applications

SERS-based detection of efficient removal of organic dyes using molybdenum dichalcogenide nanostructures

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