Recent advances in stable arsenic–phosphorus: preparation, properties, and application

Abstract

Two-dimensional (2D) arsenic–phosphorus (AsP), as a derivative of black phosphorus (BP), has achieved great progress in regards to preparation methods, property modulation, and front application, which can be attributed to the following two points. The first is that a method has been developed of alloying BP with the congener element arsenic to produce high-quality AsP; the second is that stable AsP possesses unique electronic and optical properties. To conclude the continuous and extensive research, this review focuses on synthesis details, modulation strategies, and application advances of stable AsP. Firstly, several pathways to prepare AsP with different phases are listed. Secondly, multiple solutions to optimize the electronic properties of AsP are discussed, such as strain regulation and composition tuning, and especially composition tuning of AsP including element modification, atomic substitution, and dopant participation, which can bring about adjustments of the lattice structure, bandgaps, and electronic properties. Based on the regulated AsP, applications in infrared photodetectors, high-performance transistors, and efficient-energy storage devices and so on have been widely developed. Although there are challenges ahead, this review may bring new insights into and inspirations for further development of 2D AsP-based materials and devices.

Probing 2D Exciton Dynamics of Non-Hydrogenic Anisotropic Rydberg Spectra in Anomalous Screening Regime

“…The exceptional solar absorption properties of AsP in the visible and UV spectrum, coupled with the added flexibility of strain-tunability for electronic and optical properties, position it as a standout candidate for design and integration purposes . Further, β-AsP is also found to be a promising anode material in lithium and sodium ion batteries. , While β-AsP emerged as a promising candidate for applications in photocatalysis and photovoltaics in previous studies, − a deep dive into its excitonic features remains an open frontier for researchers . The disclosure of the excitonic aspect in low-dimensional semiconductor-based photocatalysis is impeded by the difficulty in characterizing excitonic properties.…”

Hydrogen Evolution, Piezoelectricity, and Optical Properties of Monolayer Semimetal (α,β)–S2C2N2 and Janus (α,β)–SCN/CN

“…Unlike narrow bandgaps-induced infrared (IR) absorption in 2D layered arsenic-phosphorus semiconductors, [28][29][30] the semimetal β-S 2 C 2 N 2 also has good infrared absorption. After this, the Janus-like semiconductors α-SCN=CN and β-SCN=CN are studied, and they are to identify well-performed catalysts of the hydrogen evolution reaction (HER).…”

“…In this regard, we are inspired by the above research and propose two new hexagonal configurations, and , which are all semimetals and thermodynamic stable. Unlike narrow bandgaps‐induced infrared (IR) absorption in 2D layered arsenic‐phosphorus semiconductors, [ 28–30 ] the semimetal also has good infrared absorption. After this, the Janus‐like semiconductors and are studied, and they are to identify well‐performed catalysts of the hydrogen evolution reaction (HER).…”