Recent Advances in 2D‐MXene Based Nanocomposites for Optoelectronics

Abstract

MXenes have attracted significant attention from the scientific community because of various unique properties that make them appropriate for various attractive applications. As a fast grooming family, owing to 2D transition metal carbides (TMC) as well as transition metal nitrides (TMN), demonstrates versatile promising properties for electrochemical devices. Currently, only a few reports show that MXene nanocomposites possess extraordinary optoelectronic properties. This review briefly discusses the structural and surface chemistry with the extent of optoelectronic properties that can be facilitated in MXenes-based photonic devices. The systematic synthetic methodologies are also introduced, which are the most suitable for targeted device fabrication. The next and core part of the review is the applications. The current review aims to grasp all possible photonic based-applications, including solar cells, photodetectors, light emitting diode (LED), phototransistors, and photodiodes, with deep insight into the mechanisms, working conditions, stability parameters, and performance of each type of device. Finally, but most significantly, prospective provides a comprehensive thought and road map for future research possibilities to use these well-known materials in energy harvesting devices.

2D material-based sensing devices: an update

“…, 1.2 to 1.8 eV, for 2H phase MoS 2 , 70–72 which makes MoS 2 a potential candidate for a multitude of potential applications in optoelectronics. 71,73–75…”

“…67 Furthermore, the quantum connement arising perpendicular to the 2D plane leads to unique optical and electrical properties such as large carrier mobility (m) of 10 4 cm 2 V −1 s −1 for graphene 68,69 and tunable bandgap, i.e., 1.2 to 1.8 eV, for 2H phase MoS 2 , [70][71][72] which makes MoS 2 a potential candidate for a multitude of potential applications in optoelectronics. 71,[73][74][75] Generally, considering the surface effects of 2D materials, they offer a vast surface area for enhanced molecular interactions, enabling high sensitivity and extremely low detection limits, even for ultralow analyte concentrations. Additionally, the active sites on their surface boost their interaction with the target species and facilitate the immobilization of additional recognition elements, such as metallic nanoparticles (NPs) and receptors.…”

Recent Progress of Flexible Photodetectors Based on Low‐Dimensional II–VI Semiconductors and Their Application in Wearable Electronics

“…[ 7 ] In addition, the intrinsic brittleness of ITO and the limited indium resources will extremely restrict its application as ultrathin‐film in flexible and stretchable devices. [ 57 ]…”

“…[7] In addition, the intrinsic brittleness of ITO and the limited indium resources will extremely restrict its applica tion as ultrathinfilm in flexible and stretchable devices. [57] As an alternative, various booming nanostructures including metal nanowires (e.g., silver nanowires), [54] carbon nanoma terials (e.g., graphene, carbon nanotubes), [55,58] and MXene (Ti 3 C 2 T x ) [56] as promising candidates for flexible electrodes have been extensively studied in flexible photodetector due to their outstanding flexibility and transparency as well as solu tion processable. For instance, Huang and coworkers proposed a flexible and transparent photodetector based on sandwich metal-semiconductor-metal structure with vertically aligned zinc oxide nanowires (ZnO NWs) arrays as sensor materials, [54] in which the silver nanowires (Ag NWs) were utilized as both bottom and top electrodes (Figure 3d).…”

CNT–MXene ultralight membranes: fabrication, surface nano/microstructure, 2D–3D stacking architecture, ion-transport mechanism, and potential application as interlayers for Li–O2 batteries

“…Since the discovery of 2D Ti 3 C 2 nanocrystals in 2011, 1 a growing library of novel inorganic 2D nanocrystals referred to as MXenes 2,3 has been the subject of numerous studies addressing materials challenges in important areas such as energy harvesting, [4][5][6][7] energy storage, [8][9][10][11][12][13][14][15] catalysis, [16][17][18] sensing, [19][20][21] optoelectronics, 22 flexible/wearable electronics, 23 communications, 24,25 electromagnetic interference shielding, 26,27 environmental monitoring, 28,29 and biomedicine. 30 Layered 3D MAX phases with a hexagonal crystal structure (P63/mmc), metallic conductivity and the general formula of M n+1 AX n (n: 1-4), 31 a still growing family of ternary early transition-metal carbides, nitrides and carbonitrides have been used as precursor powders to synthesize MXenes through the selective chemical removal of interlayer A-element (e.g., Al, Ga, Si) from the MAX 3D structure followed by intercalation and delamination leaving behind 2D MX nanocrystals or MXenes to be dispersed in aqueous or organic solvents.…”