SITE SYMMETRY OF YB3+ IN IN0.5GA0.5P

The site symmetry of Yb3+ in In0.5Ga0.5P grown by liquid phase epitaxy has been investigated using a polarized luminescence spectroscopic te chnique. The site symmetry of indium in In0.5Ga0.5P was lowered from T -d to C-2v resulting from substitution of indium by ytterbium. The low ering symmetry was confirmed by the spectroscopic observation of the s plits of Gamma(8) levels of T-d in C-2v symmetry. The substitutional s ite symmetry of Yb3+ in In0.5Ga0.5P, i.e. Yb-In(3+), was revealed as C -2v.