Edge luminescence of excitons in MgO crystals in the vacuum ultraviolet region of the spectrum
Valbis Ya.A. , Kalder K.A. , Kuusmann I.L., Lushchik Ch.B., Ratas A.A., Rachko Z.A., Springis M.E., Tift V.M.
Edge luminescence in the vacuum ultraviolet region, due to radiative annihilation of free excitons, is observed in magnesium oxide for the first time in the case of ionic crystals.