Using the group database{} allows to modify any parameters of materials defined in the default database. Use of this group might be necessary to obtain results corresponding to real devices or to reproduce other simulations as variety of the parameters are available in the literature established with various accuracies and under various conditions that may be relevant for specific simulation cases.

Top level keywords in database{}

Nested groups in database{ …_zb{} } and database{ …_wz{} }

Documentation for this keyword in nn3 is available here (old documentation layout).