It would be helpful to be able to select from a list of common quantum dot materials when simulating a simple quantum dot.  As it is, when I change the band gap or lattice parameter (as was suggested to change the material) the dot is still "GaAs" when I check the input lot.

Also, it is not easy for novices and other users to come up with the values requested (lattice parameter, bulk band gap, effective mass)-- default values for common quantum dot materials should be included in the tool.