MXene based flexible photodetectors: progress, challenges, and opportunities

Abstract

This review highlights the progress, challenges and opportunities in MXene based flexible photodetectors.

Low-dimensional nanostructures for monolithic 3D-integrated flexible and stretchable electronics

“…Stability is one of the critical problems of MXene for practical applications. Currently, various strategies for functional regulation, which include increasing the interlayer spacing and introducing structural defects, 117,120 are used to improve the electrical conductivity and environmental stability. 121,122…”

Potential application of bismuth oxyiodide (BiOI) when it meets light

“…The photodetector, which can convert light or photons into electrons, plays an important role in its multifunctional applications, including wireless communication, biomedical imaging, astronomy, environmental monitoring, and security. 102,103 Based on the working mechanism of the photodetectors, it can be divided into three types: photoconductors, photodiodes, and phototransistors. Up till now, numerous materials, like Si and GaN, have been used for the construction of photodetectors for different optical wavelengths upon their bandgap.…”

Interface‐Engineered 2D Heterojunction with Photoelectric Dual Gain: Mxene@MOF‐Enhanced SPR Spectroscopy for Direct Sensing of Exosomes

“…[ 1 ] They possess excellent physicochemical properties, including high electrical conductivity, [ 2 ] excellent solubility, [ 3 ] better optical transparency, [ 4 ] and high density of surface functional groups, [ 5 ] beyond those of conventional 2D materials. Therefore, MXene has been widely used as an interfacial material in optoelectronic devices, including photodetectors, [ 6 ] field effect transistors, [ 7 ] electrochemical sensors, [ 8 ] and surface plasmon resonance (SPR). [ 9 ] In particular, MXene with a complete metal atomic layer can provide excellent photoresponse and electron transport properties for SPR interfaces, and its large specific surface area provides more attachment sites for biomolecules to bind at SPR interfaces, thus MXene has excellent SPR enhancement capabilities.…”