Author:
Alchalabi Karim,Zimin Dmitri,Zogg Hans
Abstract
ABSTRACTWe report on PbSe QDs grown on a few μm thick PbTe(111) layers on Si(111). The QDs form as pyramids with three (100) side faces and (111) base. Their sizes are almost equal, the standard deviation of their heights can be as low as 2–3%. This seems to be the narrowest distribution ever observed for self assembled QDs. Similar QDs of PbSe have first been described by Pinczolits et al. (Appl. Phys. Lett. 73, 250, 1998). These authors used cleaved BaF2 as a substrate, they observed two types of dots with somewhat wider size distributions. The results are compared and explained on the basis of nucleation and growth theories.
Publisher
Springer Science and Business Media LLC
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