Few-layer black phosphorus nanoparticles

Sofer, Zdeněk; Bouša, Daniel; Luxa, Jan; Mazánek, Vlastimil; Pumera, Martin

doi:10.1039/c5cc09150k

Cited by 129 publications

(101 citation statements)

References 19 publications

(22 reference statements)

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“…[23] Briefly,7 50 mg of AuSn alloy was prepared by melting as toichiometric amount of tin and gold under high vacuum directly in the ampoule used for synthesis. [23] Briefly,7 50 mg of AuSn alloy was prepared by melting as toichiometric amount of tin and gold under high vacuum directly in the ampoule used for synthesis.…”

Section: Methodsmentioning

confidence: 99%

Electrochemical Exfoliation of Layered Black Phosphorus into Phosphorene

2017

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Among 2D materials that recently have attracted enormous interest, black phosphorus (BP) is gaining ar ising popularity due to its tunable band-gap structure,w hich is strongly correlated to the thickness and can enable its use in optoelectronic and electronic applications.I ti st herefore important to provide af acile and scalable methodology to prepare single or few-layer BP nanosheets.W epropose herein as imple and fast top-down method to exfoliate aB Pc rystal into nanosheets of reduced thickness by using electrochemistry. The application of an anodic potential to the crystal in an acidic aqueous solution allows control over the exfoliation efficiency and quality of the nanosheets produced. X-ray photoelectron spectroscopy( XPS), Raman spectroscopy, and scanning transmission electron microscopy(STEM) have been applied to fully characterize the exfoliated material, which presented significantly reduced layer thickness compared to the starting bulk material.

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Section: Methodsmentioning

confidence: 99%

Electrochemical Exfoliation of Layered Black Phosphorus into Phosphorene

2017

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“…[86] Another sensor using staked BP flakes was reported to show excellent stability over 3months when exposed to ambient conditions (12 %RH) and an unchanged response for 72 hat83%RH ( Figure 5A). Thel arger surface area maximizes the effect of adsorbed molecules on the host layer, which has been shown to be beneficial for sensors for toxic NO 2 [231][232][233][234] and MeOH [235,236] gases.First-principle calculations indicate that the binding of N-based gas molecules onto BP can either reduce (NH 3 )o ri ncrease (NO 2 )t he current, thus changing the resistance. Thel arger surface area maximizes the effect of adsorbed molecules on the host layer, which has been shown to be beneficial for sensors for toxic NO 2 [231][232][233][234] and MeOH [235,236] gases.First-principle calculations indicate that the binding of N-based gas molecules onto BP can either reduce (NH 3 )o ri ncrease (NO 2 )t he current, thus changing the resistance.…”

Section: Sensorsmentioning

confidence: 99%

Black Phosphorus Rediscovered: From Bulk Material to Monolayers

2017

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Phosphorus is a nonmetal with several allotropes, from the highly reactive white phosphorus to the thermodynamically stable black phosphorus (BP) with a puckered orthorhombic layered structure. The bulk form of BP was first synthesized in 1914, but received little attention until it was rediscovered in 2014 as a member of the new wave of 2D layered nanomaterials. BP can be exfoliated to a single sheet that acts as a semiconductor with a tunable direct band gap, a high carrier mobility at room temperature, and an in-plane anisotropy. The development of BP applications is hampered by surface degradation, thus efforts to achieve effective BP passivation are ongoing, such as its integration in van der Waals heterostructures. BP has been tested as a novel nanomaterial in batteries, transistors, sensors, and photonics. This Review begins with the origin of the BP story, following the path from a bulk material to modern few/single layers. The physical and chemical properties are summarized, and the state-of-the-art of BP applications highlighted.

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“…Along with the devel- * v.saroka@exeter.ac.uk † hazem.abdelsalam@etu.u-picardie.fr opment of phosphorene synthesis by mechanical cleavage [1,3,15,16], liquid exfoliation [17][18][19], Ag + plasma thinning [20], and pulse laser deposition [21], few-layer nanoribbons [22] and phosphorene quantum dots [23][24][25] and have been produced. The theoretical results for regular shapes of phosphorene quantum dots have been reported.…”

Section: Introductionmentioning

confidence: 99%

Electro-optical properties of phosphorene quantum dots

et al. 2017

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We study electronic and optical properties of single layer phosphorene quantum dots with various shapes, sizes, and edge types (including disordered edges) subjected to an external electric field normal to the structure plane. Compared to graphene quantum dots, in phosphorene clusters of similar shape and size there is a set of edge states with energies dispersed at around the Fermi level. These states make the majority of phosphorene quantum dots metallic and enrich the phosphorene absorption gap with low-energy absorption peaks tunable by the electric field. The presence of the edge states dispersed at around the Fermi level is a characteristic feature that is independent of the edge morphology and roughness.

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Few-layer black phosphorus nanoparticles

Cited by 129 publications

References 19 publications

Electrochemical Exfoliation of Layered Black Phosphorus into Phosphorene

Electrochemical Exfoliation of Layered Black Phosphorus into Phosphorene

Black Phosphorus Rediscovered: From Bulk Material to Monolayers

Electro-optical properties of phosphorene quantum dots

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