Improved ionizing radiation hardness in fluorinated CD4007 inverters h
as been obtained. The slight increase of threshold voltage and the evi
dent degradation of quiescent supply current in CD4007 happened after
high temperature storage. The quiescent supply current degradation ind
uced by high temperature can be restrained by introducing minute amoun
ts of fluorine into gate oxides. (C) 1997 Elsevier Science Ltd.