We present an ab initio method to calculate phonon-assisted absorption and emission
spectra in the presence of strong excitonic effects. We apply the method to bulk hexagonal …

Hexagonal boron nitride (hBN) is a wide band gap material with both strong excitonic light
emission in the ultraviolet and strong exciton-phonon coupling. Luminescence experiments …

We study the luminescence of hexagonal boron nitride (h-BN) by means of nonequilibrium
Green's functions plus finite-difference electron-phonon coupling. We derive a formula for …

Defect centers in hexagonal boron nitride represent room-temperature single-photon
sources in a layered van der Waals material. These light emitters appear with a wide range …

In this letter we report a thorough analysis of the exciton dispersion in bulk hexagonal boron
nitride. We solve the ab initio GW Bethe-Salpeter equation at finite q∥ Γ K, which is relevant …

A quantitative analysis of the excitonic luminescence efficiency in hexagonal boron nitride (h-
BN) is carried out by cathodoluminescence in the ultraviolet range and compared with zinc …

We address the intrinsic optical properties of hexagonal boron nitride in deep ultraviolet. We
show that the fine structure of the phonon replicas arises from overtones involving up to six …

The two-dimensional material hexagonal boron nitride (hBN) hosts luminescent centres with
emission energies of∼ 2 eV which exhibit pronounced phonon sidebands. We investigate …

Low temperature photoluminescence spectra of the phonon sidebands of a color center in
hexagonal boron nitride are compared to an independent boson model. We infer that the LA …

Despite its simple crystal structure, layered boron nitride features a surprisingly complex
variety of phonon-assisted luminescence peaks. We present a combined experimental and …