%0 Generic %1 cannuccia2018theory %A Cannuccia, E. %A Monserrat, B. %A Attaccalite, C. %D 2018 %K PL excitons theory %R 10.1103/PhysRevB.99.081109 %T Theory of phonon-assisted luminescence in solids: application to hexagonal boron nitride %U http://arxiv.org/abs/1807.11797 %X In this manuscript we study luminescence of hexagonal boron nitride (hBN) by means of non-equilibrium Green's functions plus time-dependent perturbation theory. We derive a formula for light emission in solids in the limit of a weak excitation that includes perturbatively the contribution of electron-phonon coupling at the first order. This formula is applied to study luminescence in bulk hBN. This material has attracted interest due to its strong luminescence in the ultraviolet Watanabe et al., Nature Mat. 3, 404(2004). The origin of this luminescence has been widely discussed, but only recently has a clear signature of phonon mediated light emission emerged in the experiments Cassabois et al., Nature Phot. 10, 262(2016). By means of our new theoretical approach we provide a clear and full explanation of light emission in hBN.

@misc{cannuccia2018theory, abstract = {In this manuscript we study luminescence of hexagonal boron nitride (hBN) by means of non-equilibrium Green's functions plus time-dependent perturbation theory. We derive a formula for light emission in solids in the limit of a weak excitation that includes perturbatively the contribution of electron-phonon coupling at the first order. This formula is applied to study luminescence in bulk hBN. This material has attracted interest due to its strong luminescence in the ultraviolet [Watanabe et al., Nature Mat. 3, 404(2004)]. The origin of this luminescence has been widely discussed, but only recently has a clear signature of phonon mediated light emission emerged in the experiments [Cassabois et al., Nature Phot. 10, 262(2016)]. By means of our new theoretical approach we provide a clear and full explanation of light emission in hBN.}, added-at = {2019-05-19T20:11:27.000+0200}, author = {Cannuccia, E. and Monserrat, B. and Attaccalite, C.}, biburl = {https://www.bibsonomy.org/bibtex/2c0f1c57ebf8227a7a078d778b7965951/skoerbel}, description = {Theory of phonon-assisted luminescence in solids: application to hexagonal boron nitride}, doi = {10.1103/PhysRevB.99.081109}, interhash = {617f97ef73ed6dfa616d36082b775571}, intrahash = {c0f1c57ebf8227a7a078d778b7965951}, keywords = {PL excitons theory}, note = {cite arxiv:1807.11797Comment: 20 pages, a long version of the manuscript}, timestamp = {2019-05-19T20:11:27.000+0200}, title = {Theory of phonon-assisted luminescence in solids: application to hexagonal boron nitride}, url = {http://arxiv.org/abs/1807.11797}, year = 2018 }