Journal of Crystal Growth, Vol.214, 304-307, 2000
Unusual combination repetitions of the zero phonon line of Ni acceptor excitons in ZnSe : Ni and ZnO : Ni due to photoinduced lattice vibrations
Multiphonon vibration repetitions of the zero phonon line of a Ni impurity [d(9)h] acceptor exciton for ZnSe:Ni are analyzed. The first observed unusual structure of combination repetitions is explained by a significant anharmonism of a dominant mode which is formed by a moving of ions in the photoinduced lattice distortion area.
Keywords:3d impurity excitons;photoinduced lattice vibrations;projected density of lattice vibrations;electroabsorption technique;II-VI semiconductors