Affiliation:
1. State Key Lab of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University Beijing 100084 China
2. State Key Lab for Mesoscopic Physics School of Physics Peking University Beijing 100871 China
Abstract
AbstractThe use of non‐equilibrium growth modes with non‐steady dynamics is extensively explored in bulk materials such as amorphous and polycrystalline materials. Yet, research into the non‐steady‐state (NSS) growth of two‐dimensional (2D) materials is still in its infancy. In this study, multilayered tin selenide (SnSe2) nanoplates are grown by chemical vapor deposition under NSS conditions (modulating carrier gas flow and temperature). Given the facile diffusion and inherent instability of SnSe2, it proves to be an apt candidate for nucleation and growth in NSS scenarios. This leads to the emergence of SnSe2 nanoplates with distinct features (self‐growth twisting, symmetry transformation, interlayer decoupling, homojunction, and large‐area 2D domain), exhibiting pronounced second harmonic generation. The authors’ findings shed light on the growth dynamics of 2D materials, broadening their potential applications in various fields.
Funder
National Natural Science Foundation of China
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry