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Blue Phosphorus Growth on Different Noble Metal Surfaces: From a 2D Alloy Network to an Extended Monolayer
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-12-31 , DOI: 10.1021/acs.jpcc.0c10478 Songtao Zhao 1 , Zhenyu Li 2
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-12-31 , DOI: 10.1021/acs.jpcc.0c10478 Songtao Zhao 1 , Zhenyu Li 2
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As a new two-dimensional (2D) material with a tunable band gap and high charge carrier mobility, blue phosphorus (BlueP) has recently attracted great research interest. It is known that molecular beam epitaxial growth of BlueP on a Au substrate leads to a two-dimensional (2D) alloy network composed of Au atom-connected BlueP fragments. In this study, we investigate BlueP growth on several Au-neighbored metal substrates, focusing on the possibility of forming an extended BlueP monolayer instead of a 2D BlueP-based alloy network. It turns out that Ag is the only suitable substrate to grow a BlueP monolayer. Because the P–P bond is stronger than the P–Ag bond, P monomers on Ag(111) prefer to aggregate to form larger clusters. With increasing cluster sizes, the most stable configuration of PN clusters transforms from one-dimensional (1D) chains to 2D islands with the transition point at N = 19. This study provides new insights in understanding BlueP growth behavior and a guideline to grow high-quality BlueP monolayers.
中文翻译：
蓝磷在不同贵金属表面上的生长：从二维合金网络到扩展的单层
作为具有可调带隙和高载流子迁移率的新型二维（2D）材料，蓝磷（BlueP）最近引起了极大的研究兴趣。众所周知，BlueP在Au衬底上的分子束外延生长会导致由Au原子连接的BlueP片段组成的二维（2D）合金网络。在这项研究中，我们调查了在几个与Au相邻的金属基底上BlueP的生长，重点研究了形成扩展的BlueP单层而不是基于2D BlueP的合金网络的可能性。事实证明，Ag是生长BlueP单层的唯一合适基质。因为P–P键比P–Ag键强，所以Ag（111）上的P单体倾向于聚集形成更大的簇。随着增加的簇大小，P的最稳定的配置Ñ簇从一维（1D）链转换为2D岛，过渡点为N =19。该研究为理解BlueP生长行为提供了新见识，并为生长高质量BlueP单层膜提供了指南。
更新日期：2021-01-14
中文翻译：
蓝磷在不同贵金属表面上的生长：从二维合金网络到扩展的单层
作为具有可调带隙和高载流子迁移率的新型二维（2D）材料，蓝磷（BlueP）最近引起了极大的研究兴趣。众所周知，BlueP在Au衬底上的分子束外延生长会导致由Au原子连接的BlueP片段组成的二维（2D）合金网络。在这项研究中，我们调查了在几个与Au相邻的金属基底上BlueP的生长，重点研究了形成扩展的BlueP单层而不是基于2D BlueP的合金网络的可能性。事实证明，Ag是生长BlueP单层的唯一合适基质。因为P–P键比P–Ag键强，所以Ag（111）上的P单体倾向于聚集形成更大的簇。随着增加的簇大小，P的最稳定的配置Ñ簇从一维（1D）链转换为2D岛，过渡点为N =19。该研究为理解BlueP生长行为提供了新见识，并为生长高质量BlueP单层膜提供了指南。
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