Flat epitaxial quasi-1D phosphorene chains

Zhang, Wei; Enriquez, Hanna; Tong, Yongfeng; Mayne, Andrew J.; Bendounan, Azzedine; Smogunov, Alexander; Dappe, Yannick J.; Kara, Abdelkader; Dujardin, Gérald; Oughaddou, Hamid

doi:10.1038/s41467-021-25262-7

Cited by 33 publications

(55 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A 2D layer of freely floating phosphorous pentamers was observed experimentally on Ag(111) with a distance of the nearest pentamers of 0.76 nm . Recently, large areas of phosphorene-like chains have been synthesized on a Ag(111) surface using the molecular beam epitaxy . They were shown to be semiconducting with a band gap of 1.8 eV, and their density was dependent on P coverage.…”

Section: Introductionmentioning

confidence: 99%

“…30 Recently, large areas of phosphorene-like chains have been synthesized on a Ag(111) surface using the molecular beam epitaxy. 31 They were shown to be semiconducting with a band gap of 1.8 eV, and their density was dependent on P coverage. The interaction between phosphorus and the substrate can be tuned by intercalating buffer atoms.…”

Section: ■ Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stabilities of Isomers of Phosphorus on Transition Metal Substrates

Yin

Gladkikh

et al. 2021

Chem. Mater.

View full text Add to dashboard Cite

Great efforts have been dedicated to synthesizing phosphorene on transition metal surfaces, but there has been limited success until now. The strong interaction between phosphorus and the substrate may lead to many possible highly stable isomers of phosphorus, making the synthesis of phosphorene difficult. Here, we studied whether functionalizing transition metal surfaces by different phosphorous isomers can assist the epitaxial growth of blue phosphorene. Using density functional theory, we systematically explored five families of phosphorous isomers, blue phosphorene, modified blue phosphorene, surface phosphide, metal-phosphorus hybrid, and blue phosphorene on surface phosphide, on six different transition metal surfaces, Ag(111), Au(111), Cu(111), Co(0001), Ni(111), and Pt(111). It is found that blue phosphorene can be formed on less active transition metal surfaces, such as Ag(111) and Au(111), if the flux of phosphorus is sufficiently high. On more active transition metal surfaces, surface phosphides tend to form first and blue phosphorene may be formed on top of the surface phosphide. This study highlights the structural diversity of the transition metal surfaces in an active environment and provides guidance for the synthesis of phosphorene on transition metal surfaces.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Stabilities of Isomers of Phosphorus on Transition Metal Substrates

Yin

Gladkikh

et al. 2021

Chem. Mater.

View full text Add to dashboard Cite

show abstract

“…However, phosphorene nanoribbons (PNRs) that are quasione-dimensional phosphorene nanostructures are less explored, despite the opportunity provided by quantum confinement to adjust the material and device properties [12][13][14][15][16]. An additional motivation for further research on PNRs is provided by recent reports on fabricated and characterized ultra-narrow PNRs with the widths down to ~0.5 nm [17,18].…”

Section: Introductionmentioning

confidence: 99%

Lower Limits of Contact Resistance in Phosphorene Nanodevices with Edge Contacts

et al. 2022

View full text Add to dashboard Cite

Edge contacts are promising for improving carrier injection and contact resistance in devices based on two-dimensional (2D) materials, among which monolayer black phosphorus (BP), or phosphorene, is especially attractive for device applications. Cutting BP into phosphorene nanoribbons (PNRs) widens the design space for BP devices and enables high-density device integration. However, little is known about contact resistance (RC) in PNRs with edge contacts, although RC is the main performance limiter for 2D material devices. Atomistic quantum transport simulations are employed to explore the impact of attaching metal edge contacts (MECs) on the electronic and transport properties and contact resistance of PNRs. We demonstrate that PNR length downscaling increases RC to 192 Ω µm in 5.2 nm-long PNRs due to strong metallization effects, while width downscaling decreases the RC to 19 Ω µm in 0.5 nm-wide PNRs. These findings illustrate the limitations on PNR downscaling and reveal opportunities in the minimization of RC by device sizing. Moreover, we prove the existence of optimum metals for edge contacts in terms of minimum metallization effects that further decrease RC by ~30%, resulting in lower intrinsic quantum limits to RC of ~90 Ω µm in phosphorene and ~14 Ω µm in ultra-narrow PNRs.

show abstract

“…28 Inspired by the synthesis of a biphenylene network and phagraphene, 28,29 a new 2D phosphorene allotrope is designed through the self-assembly of blue phosphorene nanobelts and black phosphorus chains. [30][31][32][33] The novel 2D phosphorene allotrope comprises five-, six-, and seven-membered rings, denoted as the P 567 monolayer. Using ab initio calculations, its optical and electronic properties are studied in detail.…”

Section: Introductionmentioning

confidence: 99%