Geometry, electronic structure, and optical properties of boron cages: A first-principles DFT study

TL;DR

This study uses first-principles DFT calculations to analyze the stability, electronic, and optical properties of boron cages with 20 to 122 atoms, highlighting their potential in optoelectronic applications.

Contribution

It provides a comprehensive first-principles analysis of boron cage structures, identifying the most stable configurations and their optical properties for potential device applications.

Findings

32- and 92-atom cages are most stable

Optical absorption spectra indicate potential in visible-range optoelectronics

Vibrational analysis confirms dynamic stability

Abstract

A systematic study of the structural, electronic, and optical properties of cage-like boron clusters, with the number of constituent atoms ranging from 20 to 122, has been carried out within the framework of density-functional theory (DFT), employing 6-31G(d, p) extended basis set. The dynamic stability of the clusters is analyzed through the vibrational frequency analysis, while to study the thermodynamic stability, we computed their binding energies per atom. The results suggest that the 32- and 92-atom cages are the most stable among the small and the large structures. The optical absorption spectra of these cages is computed using the time-dependent densityfunctional theory (TDDFT), which suggests their applications in optoelectronic devices in the visible range of the spectrum.