A facile way to control phase of tin selenide flakes by chemical vapor deposition

作者：Wang, Zhigang; Pang, Fei^*

来源：Chemical Physics Letters, 2018, 702: 90-95.

DOI：10.1016/j.cplett.2018.05.008

• SnSe2
• SnSe
• CVD
• Phase transition

Although two-dimensional (2D) tin selenides are attracting intense attentions, studies on its phase transition are still relatively few. Here we report a facile way to control the phase growth of tin selenide flakes on mica and SiO2/Si by only adjusting nominal Sn: Se ratio, which refers to the amount of loaded SnO2 and Se precursors. High normal Sn: Se ratio induced SnSe flakes, conversely SnSe2 flakes formed. It could be used as a practical guide to selectively synthesize pure phase of single crystalline 2D layered chalco-genide materials similar to tin selenides.

• 出版日期2018-6-16
• 单位中国人民大学