Optical properties of a single type of optically active center inSi∕Si:Ernanostructures

N. Q. Vinh, H. Przybylińska, Z. F. Krasil'nik, T. Gregorkiewicz
2004 Physical Review B  
We present the results of high-resolution photoluminescence and magneto-optical spectroscopy of selectively doped Si/ Si: Er nanolayer structures grown by sublimation molecular beam epitaxy method. We show that the annealing of such samples results in a preferential formation of a single type of optically active Er-related center. Detailed information on the microscopic structure of this center has been revealed from the investigation of the Zeeman effect. Its symmetry is found to be
more » ... nd to be orthorhombic I ͑C 2v ͒ and several g-tensors of the ground and excited states are determined. The consequences of current findings for the microscopic model of the Er-related center preferentially generated in Si/ Si: Er nanolayers are discussed.
doi:10.1103/physrevb.70.115332 fatcat:7uzzrnzwargvzj75vewoiyrof4