By expanding our previously proposed analytical expression for dose-depende
nt ion-implanted impurity concentration profiles using a main function and
a tail function, we improve the model so that the parameters can be extract
ed more robustly and extend the model to accommodate double-peak profiles.
The shape of our new profile model can be imaged more dearly from a set of
parameters. (C) 2000 Elsevier Science Ltd. All rights reserved.