The luminescence of the semimagnetic semiconductor Zn_1-xMn_xSe

Abstract

Zn1-xMnxSe (0.016<or=x<or=0.445) shows luminescence emission not only in the yellow spectral range (4T1 to 6A1) but also in the near infrared. The excitation spectra of the yellow and of the infrared band are compared at different concentrations x and different temperatures T. Both emission bands are connected by energy transfer. While the yellow emission is well described by a transition within the 3d shell of tetrahedrally coordinated Mn2+ the nature of the infrared emission is not yet clear.