SEMICONDUCTOR DEVICE AND FORMATION THEREOF

摘要

A semiconductor device and methods of formation are provided. A semiconductor device includes a dielectric film over a dielectric layer. The dielectric film includes a crystalline structure having a substantially uniform composition of zirconium, nitrogen and oxygen. The dielectric film is formed through in situ nitrogen plasma doping of a zirconium layer. The dielectric film functions as a gate dielectric. The dielectric film has a high dielectric constant between about 28-29 and has a low leakage current density of about 4.79×10−5 A/cm2. The substantially uniform distribution of nitrogen throughout the zirconium oxide of the dielectric film increases the k value of the dielectric film by between about 15% to about 17% as compared to a dielectric film that has a non-uniform distribution of nitrogen through a zirconium oxide layer.

主权项

1. A semiconductor device, comprising:
a dielectric layer comprising oxide; and a dielectric film over the dielectric layer, the dielectric film comprising a crystalline structure comprising a substantially uniform composition of zirconium, nitrogen and oxygen.