@article{Liu2020, 
author = {Zhong-Liu Liu and Zhi-Li Zhu and Xu Wu and Jin-An Shi and Wu Zhou and Li-Wei Liu and Ye-Liang Wang and Hong-Jun Gao},
title = {Using graphene to suppress the selenization of Pt for controllable fabrication of monolayer PtSe2},
year = {2020},
journal = {Nano Research},
volume = {13},
number = {12},
pages = {3212-3216},
keywords = {graphene, intercalation, PtSe2, selenization, confined reaction},
url = {https://www.sciopen.com/article/10.1007/s12274-020-2989-0},
doi = {10.1007/s12274-020-2989-0},
abstract = {Platinum diselenide (PtSe2) is a promising transition metal dichalcogenide (TMDC) material with unique properties. It is necessary to find a controllable fabrication method to bridge PtSe2 with other two-dimensional (2D) materials for practical applications, which has rarely been reported so far. Here, we report that the selenization of Pt(111) can be suppressed to form a Se intercalated layer, instead of a PtSe2 monolayer, by inducing confined conditions with a precoating of graphene. Experiments with graphene-island samples demonstrate that the monolayer PtSe2 can be controllably fabricated only on the bare Pt surface, while the Se intercalated layer is formed underneath graphene, as verified by atomic-resolution observations with scanning transmission electron microscopy (STEM) and scanning tunneling microscopy (STM). In addition, the orientation of the graphene island shows a negligible influence on the Se intercalated layer induced by the graphene coating. By extending the application of 2D confined reactions, this work provides a new method to control the fabrication and pattern 2D materials during the fabrication process.}
}