Amorphous two-dimensional black phosphorus with exceptional photocarrier transport properties

  title={Amorphous two-dimensional black phosphorus with exceptional photocarrier transport properties},
  author={Matthew Z. Bellus and Zhibin Yang and Jianhua Hao and Shu Ping Lau and Hui Zhao},
  journal={2D Materials},
Recently, two-dimensional materials have been extensively studied. Due to the reduced dielectric screening and confinement of electrons in two dimensions, these materials show dramatically different electronic and optical properties from their bulk counterparts. So far, studies on two-dimensional materials have mainly focused on crystalline materials. Here we report studies of atomically thin amorphous black phosphorus, as the first two-dimensional amorphous material. Spatially and temporally… 

Efficient hole transfer from monolayer WS2 to ultrathin amorphous black phosphorus.

An amorphous semiconductor is introduced to the material library for constructing van der Waals heterostructures and it is shown that a hexagonal BN bilayer can effectively change the hole transfer process.

Two-dimensional amorphous nanomaterials: synthesis and applications

Two-dimensional (2D) nanomaterials (sheet-like materials with few-atoms thickness and lateral size above 100 nm) have always aroused scientists’ interests since 2004 when Novoselov et al successfully

Synthesis, properties, and applications of 2D amorphous inorganic materials

In the last decade, the research on two-dimensional (2D) materials has drawn a lot of interest from the aspects of both fundamental study and practical application. The atomic-scale thickness and

Photocarrier dynamics in monolayer phosphorene and bulk black phosphorus.

The photocarrier lifetime of monolayer phosphorene was found to be about 700 ps, which is about 9 times longer than that of bulk black phosphorus, and can be attributed to the smaller bandgap and stronger nonadiabatic coupling in bulk.

Electrical transport properties in group-V elemental ultrathin 2D layers

  • Zehan WuJ. Hao
  • Materials Science
    npj 2D Materials and Applications
  • 2020
After the breakthrough of the study on the two-dimensional (2D) layered phosphorus, group-V elemental ultrathin 2D layers have captured considerable attentions in recent years on account of their

Charge and Energy Transfer in Different Types of Two-Dimensional Heterostructures

In the last decade or so, layered materials have attracted significant attention due to their promise for tailoring electronic properties at an atomic level. Individually, these materials have

Amorphous black phosphorus: wet-chemical synthesis and atomic disordering-dependent electrocatalytic performance

Although crystalline black phosphorus (c-BP) is attracting enormous interest in the past few years for a wide range of applications, studies on amorphous BP (a-BP) have been quite rare due to the

Luminescence in 2D Materials and van der Waals Heterostructures

Due to the isolation and fabrication of a rapidly increasing number of 2D materials, extensive attention is drawn to investigate 2D materials for scientific and technological studies as well as

Vertical Josephson field-effect transistors based on black phosphorus

The gate-tunable Josephson junction, generally achieved in planar Josephson field-effect transistors (JoFETs), is a key element for the applications of superconducting devices. At present, the

Dynamics of charge-transfer excitons in a transition metal dichalcogenide heterostructure.

Spatially and temporally resolved transient absorption measurements on the dynamics of charge-transfer excitons in a MoS2/WS2/MoSe2 trilayer heterostructure help develop an in-depth understanding of the dynamics in two-dimensional heterostructures.



High-mobility transport anisotropy and linear dichroism in few-layer black phosphorus

A detailed theoretical investigation of the atomic and electronic structure of few-layer black phosphorus (BP) is presented to predict its electrical and optical properties, finding that the mobilities are hole-dominated, rather high and highly anisotropic.

Highly anisotropic and robust excitons in monolayer black phosphorus.

The experimental observation of highly anisotropic, bright excitons with large binding energy in monolayer black phosphorus opens avenues for the future explorations of many-electron physics in this unusual two-dimensional material, but also suggests its promising future in optoelectronic devices.

Photooxidation and quantum confinement effects in exfoliated black phosphorus.

This chemistry is investigated using in situ Raman and transmission electron spectroscopies to highlight a thickness-dependent photoassisted oxidation reaction with oxygen dissolved in adsorbed water, consistent with a phenomenological model involving electron transfer and quantum confinement as key parameters.

Black phosphorus field-effect transistors.

Two-dimensional crystals have emerged as a class of materials that may impact future electronic technologies. Experimentally identifying and characterizing new functional two-dimensional materials is

Quantum Hall effect in black phosphorus two-dimensional electron system.

The observation of the integer quantum Hall effect in a high-quality black phosphorus 2DES is reported, and important information on the energetics of the spin-split Landau levels in black phosphorus is gained.

Exceptional and Anisotropic Transport Properties of Photocarriers in Black Phosphorus.

It is shown that black phosphorus has room-temperature charge mobilities on the order of 10(4) cm(2) V(-1) s(-1), which are about 1 order of magnitude larger than silicon, and strong anisotropic transport in black phosphorus is demonstrated.

Phosphorene: A New 2D Material with High Carrier Mobility

Preceding the current interest in layered materials for electronic applications, research in the 1960's found that black phosphorus combines high carrier mobility with a fundamental band gap. We

Recent Advances in Two-Dimensional Materials beyond Graphene.

Insight is provided into the theoretical modeling and understanding of the van der Waals forces that hold together the 2D layers in bulk solids, as well as their excitonic properties and growth morphologies.

Phosphorene: an unexplored 2D semiconductor with a high hole mobility.

The found phosphorene to be stable and to have an inherent, direct, and appreciable band gap, which depends on the number of layers and the in-layer strain, and is significantly larger than the bulk value of 0.31-0.36 eV.

Electronic bandgap and edge reconstruction in phosphorene materials.

At atomic scale electronic variation related to strain-induced anisotropic deformation of the puckered honeycomb structure of freshly cleaved black phosphorus is reported using a high-resolution scanning tunneling spectroscopy (STS) survey along the light (x) and heavy (y) effective mass directions.