Defect Generation and Surface Functionalization on Epitaxial Blue Phosphorene by C60 Adsorption,The Journal of Physical Chemistry C

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Defect Generation and Surface Functionalization on Epitaxial Blue Phosphorene by C60 Adsorption
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2019-05-08 , DOI: 10.1021/acs.jpcc.9b03344
Dechun Zhou ₁ , Nan Si ₁ , Qin Tang ₁ , Bohong Jiang ₁ , Xiufeng Song ₂ , Han Huang ₃ , Miao Zhou ₄ , Qingmin Ji ₁ , Tianchao Niu ₁

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We present molecular beam epitaxial growth of blue phosphorene (BlueP), a new allotrope of black phosphorene, on Au(111) and its surface functionalization with fullerene (C₆₀) molecules by low-temperature scanning tunneling microscopy and scanning tunneling spectroscopy (STS). In contrast to the well-ordered aggregation on conventional surfaces, C₆₀ molecules favor to adsorb at the domain boundaries of BlueP and create defects and a disordered phase nearby. STS reveals a shift of the conduction band minimum of BlueP and a remarkable broadening of the lowest unoccupied molecular orbital of C₆₀, indicating an interfacial charge transfer. In addition, codeposition of C₆₀ with phosphorous precursors on Au(111) followed by annealing generates a new reconstruction of BlueP comprising larger triangles and higher density of dislocation lines that are favorable for anchoring bulky C₆₀ balls.

中文翻译：

C ₆₀吸附在外延蓝色磷的缺陷产生和表面功能化

我们通过低温扫描隧道显微镜和扫描隧道光谱（STS）提出了在Au（111）上分子束外延生长的一种新的同素异形体黑色磷光体蓝色磷光体（BlueP）及其与富勒烯（C ₆₀）分子的表面功能化。与常规表面上的有序聚集相反，C ₆₀分子倾向于吸附在BlueP的域边界上并在附近产生缺陷和无序相。STS揭示了BlueP导带最小值的移动和C ₆₀的最低未占据分子轨道的显着加宽，表明存在界面电荷转移。另外，C _{60的代码位置}将磷前驱物放在Au（111）上，然后退火，将生成BlueP的新重构，该BlueP包含较大的三角形和较高的位错线密度，有利于锚固庞大的C ₆₀球。

更新日期：2019-05-16

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