Free excitons with n=2 in bulk GaN gan Steube, M, Reimann, K, Frohlich, D, Clarke, S

Two-photon spectroscopy in GaN gan Steube, M, Reimann, K, Frohlich, D, Clarke, S

Exciton binding energies and band gaps in GaN bulk crystals gan Reimann, K, Steube, M, Frohlich, D, Clarke, S