Evidence of terbium and oxygen co-segregation in annealed AlN:Tb
Published in Applied Physics Letters, 2017
Recommended citation: V. C. Angadi, F. Benz, I. Tischer, K. Thonke, T. Aoki and T. Walther (2017), "Evidence of terbium and oxygen co-segregation in annealed AlN: Tb" Applied Physics Letters, 110(22), pp. 222102.
Analytical scanning transmission electron microscopy (STEM) has been applied to study aluminium nitride (AlN) doped with terbium (Tb) and annealed at 800◦C. Correlation of the maps of Tb and oxygen (O) from electron energy-loss spectrum (EELS) imaging proves that these two elements co-segregate, replacing aluminium (Al) and nitrogen (N) atoms, respectively. This agrees well with modelling which predicted the existence of Tb−O complexes needed to fit all lines in the rather complicated cathodoluminescence (CL) emission spectrum of the sample.
Recommended citation: V. C. Angadi, F. Benz, I. Tischer, K. Thonke, T. Aoki and T. Walther (2017), "Evidence of terbium and oxygen co-segregation in annealed AlN: Tb" Applied Physics Letters, 110(22), pp. 222102.