Emerging members of two-dimensional materials: bismuth-based ternary compounds

Abstract

Bismuth-based binary compounds, including Bi2Se3 and Bi2Te3, have attracted increasing attention as well-known topological insulators. On the other hand, bismuth-based ternary compounds exhibit diverse properties, such as, ultrahigh carrier mobility, and strong Rashba spin splitting. Moreover, they boast of superior photocatalytic properties, implying great potential to be used in a wide range of applications. The unique structure and properties of two-dimensional (2D) materials, especially the extraordinary electronic and optical properties of 2D Bi2O2Se, have given rise to significant research interests for the exploration of 2D bismuth-based ternary compounds. In this review, we will comprehensively discuss the properties of three important families of bismuth-based ternary compounds, including Bi2O2X (X = S, Se, Te), BiTeX (X = Cl, Br, I), and BiOX (X = Cl, Br, I). In particular, we have placed emphasis on the latest progress in their 2D forms, including their novel properties and applications. This review would aid in understanding the superior performance of bismuth-based ternary compounds and offer a perspective for future research on these emerging 2D materials.

Bi2O2Te Nanosheets Saturable Absorber‐Based Passive Mode‐Locked Fiber Laser: From Soliton Molecules to Harmonic Soliton

“…[10] The unique structure endows it with outstanding characteristics that cannot be provided by other 2D materials, in addition to further optoelectronic advantages; thus, resulting in a wide range of applications. [11,12] Thus, it is necessary to identify potential 2D bismuth oxychalcogenide nanomaterials and to investigate their characteristics as well as potential applications. Bismuth oxyselenide (Bi 2 O 2 Se) is the first synthesized Bi 2 O 2 X material by gas-phase transport reaction.…”

“…[13,14] Thereafter, extensive investigations are carried out with focus on the physical and chemical properties, which reveals its outstanding thermoelectric properties, sensible photon response, adjustable bandgap, ultra-fast carrier mobility, and long carrier relaxation time. [11,[15][16][17] The combination of these properties renders it a promising candidate for various novel optoelectronic devices at the near-infrared (NIR) and mid-infrared (mid-IR) regions. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] Recently, bismuth oxytelluride (Bi 2 O 2 Te), as a new addition to the bismuth oxychalcogenide family, has attracted increasing research attention.…”

Oxychalcogenides as Thermoelectric Materials: An Overview

“…Bi 2 O 2 Ch (Ch = S, Se, Te) is another class of promising n-type Bi-based oxychalcogenides, which crystallizes in a tetragonal structure (space group: I 4 /mmm ) consisting of alternate layers of insulating [Bi 2 O 2 ] 2+ and conducting Ch 2– square nets stacked along the c -axis, − as shown in Figure .…”

2D material based heterostructures for solar light driven photocatalytic H2production

“…14 2D materials include 2D allotropes of various elements (e.g., graphene, borophene, silicene, phosphorene and germanene) or compounds (e.g., h-BN, g-C 3 N 4 (CN), transition metal dichalcogenides (TMDs), MXenes, layered double hydroxides (LDHs)), whose family is still growing. [15][16][17][18] These 2D materials with unique structural and electronic properties result in extensive breakthroughs in the catalysis and energy conversion fields. [19][20][21] It has been found that 2D semiconductors which have large specific surface areas with abundant surface-active sites could be promising photocatalysts providing superior electron mobility and short diffusion distance for efficient charge separation.…”