Influence of Annealing Temperature on the Structural and Electrical Properties of Si-Doped Ferroelectric Hafnium Oxide

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

The ferroelectric properties of hafnium oxide films are strongly influenced by the crystallization process due to the interaction of thermodynamics, kinetics, and mechanical stress. In this work, the influence of annealing temperature on the crystallographic properties and microstructure of Si-doped hafnium oxide thin films as well as their ferroelectric properties are investigated by X-ray diffraction, transmission Kikuchi diffraction, and electrical characterization. The findings reveal the emergence of a [100] and [110] out-of-plane texture for metal-ferroelectric-metal (MFM) and metal-ferroelectric-insulator-semiconductor (MFIS) capacitor structures with increasing annealing temperature, respectively. In combination with observed stress relaxation at higher temperatures and the evolution of the wake-up behavior, insights into the crystallization process and the influence of the interplay of microstructure and stress on the ferroelectric properties of hafnium oxide thin films are given.

Details

OriginalspracheEnglisch
Seiten (von - bis)4115-4120
Seitenumfang6
FachzeitschriftACS applied electronic materials
Jahrgang3
Ausgabenummer9
PublikationsstatusVeröffentlicht - 28 Sept. 2021
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0002-2484-4158/work/142257584

Schlagworte

Schlagwörter

  • crystallization, ferroelectrics, hafnium oxide, microstructure, transmission Kikuchi diffraction, X-ray diffraction