研究目的
Investigating the electronic properties, carrier mobility, and potential applications of monolayer and bilayer green phosphorene in water splitting and photovoltaics.
研究成果
Monolayer and bilayer green phosphorene exhibit high carrier mobility and tunable band gaps, making them suitable for photocatalytic water splitting and photovoltaic applications. The heterostructures with MoSe2 show promising power conversion efficiencies.
研究不足
The study is based on theoretical calculations and may require experimental validation. The practical application of green phosphorene in devices may face challenges related to synthesis and stability.
1：Experimental Design and Method Selection
Density functional theory-based calculations were performed using the SIESTA simulation package. The van der Waals (vdW)-DRSLL functional was used for exchange and correlation energies. The Kohn−Sham orbitals were expanded using a split-valence double zeta basis set with polarization functions (DZP).
2：Sample Selection and Data Sources
Monolayer and bilayer green phosphorene and their heterostructures with MoSe2 were considered. The structures were relaxed until the forces on each atom were less than 0.01 eV/Å.
3：List of Experimental Equipment and Materials
SIESTA simulation package, numerical pseudoatomic orbitals, Monkhorst−Pack scheme for Brillouin zone sampling.
4：Experimental Procedures and Operational Workflow
Geometry optimization was carried out using the standard conjugate-gradient technique. A vacuum region of about 20 Å perpendicular to the 2D plane was used to prevent interactions between the periodic images.
5：Data Analysis Methods
The carrier mobilities were calculated using a phonon-limited scattering model. The strain−stress relationship was calculated to investigate mechanical stability.
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