Quasi‐Monolayer Black Phosphorus with High Mobility and Air Stability

Tan, Sherman Jun Rong; Abdelwahab, Ibrahim; Chu, Leiqiang; Poh, Sock Mui; Liu, Yanpeng; Lu, Jiong; Chen, Wei; Loh, Kian Ping

doi:10.1002/adma.201704619

Cited by 83 publications

(52 citation statements)

References 53 publications

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“…Recently was reported the modification of black phosphorus by lithium hydride formed in situ by intercalation of lithium followed by subsequent hydrogenation. The obtained material was not only more stable but also showed photoluminescence …”

Section: Modificationsmentioning

confidence: 99%

“…Theo btained material was not only more stable but also showed photoluminescence. [40] Thei nteraction of black phosphorus surface was experimentally and theoretically studied also for other small molecules like carbon monoxide [41] and nitrogen dioxide, hydrogen sulfide,and hydrogen. [13b] Theoretically were investigated also elemental halogens interactions and possible intercalations in double-layer black phosphorus.…”

Section: Angewandte Chemiementioning

confidence: 99%

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Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth

2019

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Materials with few layers have been subjected to extensive research for the last few decades owing to their remarkable properties as for example catalysts, optical and electrical devices, or sensors. The properties and electronic structure of these materials can be tailored by the introduction of substituents. In the case of more reactive species, the modification also can improve stability, which is also an important factor with respect to device fabrication. This review focuses on monoelemental layered materials of Group 15 elements (pnictogens) and in particular their modification, leading to better ambient stability and/or different properties by covalent and non‐covalent modifications. The future modification and application of pnictogens are outlined.

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Section: Modificationsmentioning

confidence: 99%

Section: Angewandte Chemiementioning

confidence: 99%

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth

2019

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“…This direct gap increases up to ∼2 eV as its thickness decreases from bulk to few layers [20]. In addition, the field-effect transistor (FET) [2,5,6] based on phosphorene is found to have an on/off ratio of 10 3 and a high hole carrier mobility up to 800 cm 2 /V·s [21]. Importantly, there have been a few effective ways to solve the instability problem for phosphorene in the environment [22].…”

Section: Introductionmentioning

confidence: 99%

Crystallographic Characterization of Black Phosphorene and its Application in Nanostructures

et al. 2019

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The central question in the field of two-dimensional (2D) materials is how a material behaves when it is patterned at nanometer scale with different edge geometries. Due to the anisotropy inherent in the puckered structure, black phosphorene nanostructures may have more varieties of edge geometries. Here, we present a comprehensive 2D planar crystallographic characterization of phosphorene uniformly by a chiral vector (angle), from which a new type of edge atomic configuration, the slope edge geometry is discovered. The phosphorene nanoribbons (PNRs) with slope edges, like previously noticed zigzag and skewed-armchair PNRs, also own interesting twofold-degenerate edge states. These three marginal directions, together with the skewed-zigzag and armchair directions without edge states, divide a phosphorene into four regions among which the electronic property is different from each other. Further, for a PNR cutting along any possible direction, by taking into account the z-direction in structure, whether or not it owns edge states depends on the existence of periodic zigzag-like morphology along the edges. For application, moreover, we propose a PNR-based z-shaped homogenous junction with scale ∼100 nm, where the central scattering region between two PNR electrodes is a phosphorene quantum dot (PQD) of PNR segment with various edge morphologies. Interestingly, the calculated conductance by Kwant code based on tight-binding combing with scattering-matrix for the junction relies sensitively on the central PQD edge states. In specification, for the junctions of PQD with edge states the conductance exhibit a terrace with resonant oscillations near Fermi energy, otherwise the electron transport is blocked due to the absence of edge states. Remarkably, the number of oscillating peaks exactly matches to the number of sawtooth along an edge of PQD, since the discrete energy levels of the zigzag-like edge provide the transporting channels for electrons. The results here may be extended to the group-VA 2D materials for observing the electronic property of nanostructures in experiments, and provide a reference for the preparation of better nano-devices. *

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“…The efficient photothermal conversion makes them advantageous for photothermal evaporation, but their photo‐degradability should be considered for practical applications. There have been a vast number of strategies working on enhancing the stability of phosphorene, including covalent bonding via aryl diazonium, surface coordination of titanium sulfonate ligand, fluorination, alkali metal‐intercalation, metal‐ion passivation, and package by graphene shell, hexagonal BN, organic monolayers, graphene oxide (GO), AlO x , etc. Searching for other phosphorene‐analogue alternatives provide another avenue for photothermal evaporation .…”

Section: Photothermal Evaporationmentioning

confidence: 99%

Solar‐Inspired Water Purification Based on Emerging 2D Materials: Status and Challenges

et al. 2020

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Water shortage and the energy crisis are two major global challenges in this century. The solution for water crisis should be based on a sustainable energy source. Solar‐inspired water purification is an efficient and green technology for tackling the water challenge using abundant and clean solar energy through photothermal evaporation‐induced water production, photoinduced antimicrobial treatment, and photocatalytic degradation of organic contaminants. 2D nanomaterials draw significant attention for their use these three water‐purification methods because of their large surface area, broadband and strong absorption in the solar spectral range, and efficient photothermal and photocatalytic transformation. Herein, the recent development of 2D nanomaterials applied in photothermal evaporation, photoinduced antimicrobial treatment, and photocatalytic capability is comprehensively overviewed. Various strategies in enhancing the light‐absorption and light‐conversion efficiency for different 2D nanomaterials are presented. The challenges and perspectives of these 2D nanomaterials are further discussed for practical water purification. This Review highlights these green energy–driven water‐purification methods based on emerging 2D materials.

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Quasi‐Monolayer Black Phosphorus with High Mobility and Air Stability

Cited by 83 publications

References 53 publications

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth

Chemistry of Layered Pnictogens: Phosphorus, Arsenic, Antimony, and Bismuth

Crystallographic Characterization of Black Phosphorene and its Application in Nanostructures

Solar‐Inspired Water Purification Based on Emerging 2D Materials: Status and Challenges

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