【摘要】 我们报道了一种通过机械剥离和Ar+等离子体减薄过程的组合来制备3.6 nm厚的二维双（苄基铵）四氯化铅（BA₂PbCl₄）的薄层。压电力显微镜测量表明,Ar+等离子体蚀刻后单元层厚度的BA2PbCl4薄层的铁电性仍然保持。更多还原

【Abstract】 Here, we report a successful method to fabricate a 2D bis(benzylammonium) lead tetrachloride(BA2 PbCl4) flake with a thickness of 3.6 nm by a combination of mechanical exfoliation and an Ar+plasma thinning process. Piezoresponse force microscopy(PFM) measurements reveal that the ferroelectricity of the BA2 PbCl4 flakes with single-unit-cell thickness persists after Ar+plasma etching.更多还原