Theoretical study on the tunable electronic band structure of Cs2PbI2Cl2/CsPbBr3 halide perovskite heterostructure driven by ferroelectric polarization modulation

Photocatalytic Nitrogen Reduction Reaction over Two-Dimensional Cs3Bi2Br9–CdS Van der Waals Heterostructures by External Control Strategies

“…Applying mechanical strain can effectively adjust the electronic structure properties of the material. Many previous reports − have been performed on varying the electronic properties of materials by stress and strain. This study also investigated the evolution of the electronic properties of Cs 3 Bi 2 Br 9 –CdS vdWHs subjected to uniaxial strain along the X and Y directions, respectively.…”

Insight into the Electronic Properties of Semiconductor Heterostructure Based on Machine Learning and First-Principles

“…Additionally, the applicability in the field of optoelectronic devices is restricted due to its low optical absorption rate and difficulties in creating a p–n junction. − Various approaches have been attempted to open the band gap, such as adjusting the lattice structure, introducing doping, adsorption, defects, and applying external forces or electric fields. Recent reports have found that a graphene-based heterostructure with outstanding electric properties can be obtained, − and density functional theory calculation has confirmed that such materials indeed have fascinating properties . Nevertheless, a long time is needed to design and synthesize the materials, and even with the technology of high-throughput simulation, the huge amount of data and the cost of computation are prohibitive.…”

In situ, seed-free formation of a Ruddlesden–Popper perovskite Cs2PbI2Cl2 nanowires/PbI2 heterojunction for a high-responsivity, self-powered photodetector

“…32 To utilize the outstanding optoelectronic features of Cs 2 PbI 2 Cl 2 materials well in optoelectronic devices, there have been some studies to construct heterojunctions by combining Cs 2 PbI 2 Cl 2 with other wellknown semiconductors. In this way, the novel Cs 2 PbI 2 Cl 2 / CsPbBr 3 , 33 Herein, the RP perovskite Cs 2 PbI 2 Cl 2 nanowires/PbI 2 heterojunction is built for the first time via a two-step solution strategy, for which the CsCl methanol solution (CsCl/MeOH) is directly spin-coated onto a solution-processed PbI 2 film. The in situ, seed-free formation of the Cs 2 PbI 2 Cl 2 nanowires is related to the stress-induced diffusion mechanism, wherein their length and density can be controlled by adjusting the concentration of the CsCl/MeOH solution.…”