Asymptotic analysis of subwavelength halide perovskite resonators

TL;DR

This paper provides an asymptotic analysis of subwavelength resonances in halide perovskite nanoparticles, linking resonant frequencies to shape eigenvalues and extending to particle dimers, with validation against spherical cases.

Contribution

It introduces a novel integral method-based approach to quantify and analyze subwavelength resonances in halide perovskite particles, including complex dimer configurations.

Findings

Resonant frequencies relate to shape eigenvalues.

Characterization of hybridized resonances in particle dimers.

Validation with spherical resonator cases.

Abstract

Halide perovskites are promising materials with many significant applications in photovoltaics and optoelectronics. In this paper, we use integral methods to quantify the resonant properties of halide perovskite nano-particles. We prove that, for arbitrarily small particles, the subwavelength resonant frequencies can be expressed in terms of the eigenvalues of the Newtonian potential associated with its shape. We also characterize the hybridized subwavelength resonant frequencies of a dimer of two halide perovskite particles. Finally, we examine the specific case of spherical resonators and demonstrate that our new results are consistent with previous works.