Kun Yu
(, ), Hui Wang
(, ), Weilin Liu
(, ), Zihao Fu
(, ), Yichen Feng
(, ), Wenna Tang
(, ), Lu Han
(, ), Yuefeng Nie
(, ), Dong Li
(, ), Zhenjia Zhou
(, ), Jun Li
(, ), Anlian Pan
(, ), Libo Gao
(, )
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Growth of wafer-scale two-dimensional ferroelectric CuCrS2 films
Two-dimensional (2D) ferroelectrics with high Curie temperature (Tc) exhibit stable ferroelectricity at the nanoscale and possess significant applications in the miniaturization of ferroelectric devices. However, controllable growth of wafer-scale 2D ferroelectric films with desired thickness is still rarely reported. In this study, we develop a two-step vapour deposition method to grow wafer-scale 2D CuCrS2 ferroelectric films with a uniform thickness from 2 to 10 nm. These films possess a non-centrosymmetric structure with a 3R stacking sequence, exhibit ferroelectric polarizations, and the Tc of CuCrS2 is higher than room temperature. The constructed electronic devices exhibit the characteristics of ferroelectric memristor, which opens up applications for ferroelectric functional devices.
期刊介绍：
Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.
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