研究目的
To synthesize a pure atomically-thin blue phosphorous (BlueP) monolayer via silicon intercalation of the BlueP-Au alloy on Au(111) and characterize the intercalation process and the evolution of the band structures.
研究成果
The study successfully synthesized atomic layered BlueP on Au(111) by tuning the interfacial interaction through Si intercalation. The atomic structure, chemical state, and band structures of the fabricated BlueP layer were clearly revealed. The findings demonstrate a flexible means to tune the interfacial interaction of BlueP with the substrate and could stimulate future research to explore the electronic properties of the surface functionalized BlueP.
研究不足
The study focuses on the synthesis and characterization of BlueP on Au(111) via silicon intercalation. The limitations include the need for further exploration of the electronic properties of surface functionalized BlueP and the potential for optimizing the intercalation process.
1：Experimental Design and Method Selection:
The study involves the synthesis of BlueP on Au(111) via silicon intercalation, characterized by low-temperature scanning probe microscopy, synchrotron radiation-based x-ray photoelectron spectroscopy, angle-resolved photoemission spectroscopy, and density functional theory calculations.
2：Sample Selection and Data Sources:
Samples were prepared by depositing phosphorus on Au(111) and subsequently intercalating silicon. Data were collected using STM, nc-AFM, XPS, LEED, and ARPES.
3：List of Experimental Equipment and Materials:
Equipment includes LT-STM, qPlus nc-AFM, XPS, ARPES, and LEED. Materials include bulk black phosphorus, silicon rod, and Au(111) substrate.
4：Experimental Procedures and Operational Workflow:
Phosphorus was evaporated onto Au(111) at room temperature, followed by annealing. Silicon was then evaporated onto the sample held at 280 ℃.
5：Data Analysis Methods:
Data were analyzed using DFT calculations and second derivative plots for ARPES spectra.
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