An Efficient Method to Transfer 2D Tmdcs Materials Via Novel Rapid Continuous Laser

Abstract

The complex synthesis process and the limitations pertaining to substrates are the challenges that are encountered in the large-scale application of two-dimensional (2D) nanosheets. In the study, we developed an efficient method which can directly transfer low melting point 2D TMDCs materials at room temperature by 808-nm laser irradiation. This novel process can be used as a rapid universal technology to transfer predeposited low melting temperature materials, such as SnSex, NiSex and NbSex, on random substrates. By adjusting the laser power and irradiation time, we can design surface morphology, composition ratio and phase transition of transferred film. Besides, we have successfully transferred materials not only on common rigid single crystal Si or Al2O3 substrate but also on fragile materials such as paper and polyimide homogeneously without any damage. Furthermore, we demonstrated that transferred SnSex can be applied to electrode materials of energy storage system or sensing materials of photo-detector. This novel method paves the way for the scale-up synthesis of nanosheets on flexible substrates, which has enormous potential in photoelectronics and battery applications.