Patent ID: 11869766
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. A method, comprising:
forming a first transistor over a substrate;
forming a bottom electrode over the first transistor;
depositing a first seed layer over the bottom electrode;
performing a first surface treatment on the first seed layer, wherein after the first surface treatment the first seed layer includes at least one of a tetragonal crystal phase and an orthorhombic crystal phase;
depositing a dielectric layer over the bottom electrode adjacent to the first seed layer, the dielectric layer including an amorphous crystal phase;
depositing an upper layer over the dielectric layer; and
performing a thermal operation on the dielectric layer to thereby convert the dielectric layer into a ferroelectric layer.