Stark effects of the fluorescence spectra in InP core and InP/ZnSe core/shell quantum dots under an external electric field.

ABSTRACT: Investigating the optical response of quantum dots subjected to an external electric field offers key insights into their suitability for nanoelectronic device integration. In this study, we employ first-principles calculations to elucidate the Stark effect in both InP core and InP/ZnSe core/shell quantum dots. Our analysis reveals three characteristic Stark shift behaviors, including quadratic, linear, and hybrid quadratic-linear responses, where each is directly linked to the evolution of the excitonic dipole moment, reflecting the intrinsic electron-hole separation (D _0i , where i = x, y, z) in the absence of an applied field. Calculated electron densities for excited states demonstrate that spectral energy ΔE increases as |D <

SUBMITTER: Du N 

PROVIDER: S-EPMC12606413 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature