Vapor-Phase Precise-Synthesis of 2D Inorganic Materials for Optoelectronics

Abstract

2D materials have attracted intensive attention due to their unique electrical and optical properties associated with their strictly defined low dimensionalities. They provide a wide range of basic building blocks for future electronics and optoelectronics. The chemical vapor deposition (CVD) has been proposed to be efficient to realize the controllable thickness, scalable size, which are necessary for both industrial applications and fundamental researches. Herein, we share our research works to realize the controllable growth of 2D materials. We found that stable growth microenvironment can regulate the growth of 2D materials. Thus, we developed near-steady source supply, space-confined, and additive-assisted passivated growth methods to solve the problem of unstable growth environment caused by uneven source and mass transfer. Then, we developed several strategies to precisely control the parity, separation, and transport of the carriers in 2D materials including fabricating defect-free interface via van der Waals dielectrics, modulating the parity of carriers via ferroelectric-field, and the separation of carriers via band engineering. Toward future development, we highlight the opportunities and challenges in this field. What is the most favorite and original chemistry developed in your research group?. Additive-assisted passivated chemical vapor deposition for growing 2D materials such as non-layered 2D materials and 2D inorganic molecular crystals. How do you get into this specific field? Could you please share some experiences with our readers?. I got my introduction to chemical vapor deposition for growing nanomaterials from my undergraduate training. Then I focused on transistors and photodetectors during my postgraduate research in Japan. When I came back, I found that 2D materials are promising for the next generation optoelectronics. Thus, I started to get into this field of synthesis of 2D materials for optoelectronics. What is the most important personality for scientific research?. Interest, is the driving force to find novel phenomenon, and persist in. scientific research. How do you supervise your students?. I prefer to discuss different experimental directions according to each student's interests. In terms of topic selection, I will give them more space for thinking and ask them to discuss with me with their problems. Then, we will choose one or more directions that deserve to be focused. I will follow up the details of their experiments every week. In the meantime, I also coach them how to design research projects for their research, and perform multidisciplinary research in collaboration with others. What are your hobbies?. Running. If you have anything else to tell our readers, please feel free to do so. As a scientist, please keep interests and curiosity in your scientific research, as well as persistent.