Electro- and magneto-optical response of the bilayer InSe quantum dot

Area of Science:

• Condensed Matter Physics
• Materials Science
• Quantum Dots

Background:

• Indium Selenide (InSe) is a promising material for optoelectronic applications.
• Quantum dots (QDs) offer tunable electronic and optical properties.
• Understanding bilayer InSe QD properties is crucial for device engineering.

Purpose of the Study:

• Investigate the electronic and optical properties of bilayer InSe quantum dots.
• Examine the influence of stacking configurations on band structure and optical spectra.
• Analyze the effects of external electric and magnetic fields on these properties.

Main Methods:

• Tight-binding method for electronic structure calculations.
• Simulation of band structures and density of states.
• Calculation of optical absorption spectra under various conditions.

Main Results:

• Stacking configuration significantly impacts the bandgap of bilayer InSe QDs.
• External electric and magnetic fields modulate the anisotropy of optical properties.
• Distinct electro- and magneto-optical absorption spectra were observed.

Conclusions:

• Bilayer InSe QD stacking is a key factor in determining bandgap.
• External fields offer a method to control anisotropic optical responses.
• Findings support experimental research on InSe photoelectric properties and anisotropic optical devices.