Transition from island formation to pseudomorphic growth in the submonolayer CdSe/ZnSe multilayer system

Kim, M.; Furdyna, J. K.; Dobrowoiska, M.; Lee, S.; Cheon, M.; Luo, H.
September 2003
Applied Physics Letters;9/1/2003, Vol. 83 Issue 9, p1728
Academic Journal
Transmission electron microscopy and photoluminescence measurements have been performed on samples with submonolayer (0.3 up to 0.9 ML) CdSe insertions in ZnSe in both single- and multilayer geometries. We observe a significant difference in Cd distribution in the layer plane between these two geometries for the same Cd coverage. While Cd-rich islands can be seen for a single layer of Cd, a layered growth is achieved in the multilayer samples. This effect is attributed to the reduction of lattice mismatch in the multilayer samples due to a high level of diffusion of Cd atoms along the growth direction. © 2003 American Institute of Physics.


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