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Method for fabrication of crack-free ceramic dielectric films

Patent ·
OSTI ID:1411430

The invention provides a process for forming crack-free dielectric films on a substrate. The process comprises the application of a dielectric precursor layer of a thickness from about 0.3 .mu.m to about 1.0 .mu.m to a substrate. The deposition is followed by low temperature heat pretreatment, prepyrolysis, pyrolysis and crystallization step for each layer. The deposition, heat pretreatment, prepyrolysis, pyrolysis and crystallization are repeated until the dielectric film forms an overall thickness of from about 1.5 .mu.m to about 20.0 .mu.m and providing a final crystallization treatment to form a thick dielectric film. The process provides a thick crack-free dielectric film on a substrate, the dielectric forming a dense thick crack-free dielectric having an overall dielectric thickness of from about 1.5 .mu.m to about 20.0 .mu.m.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357
Assignee:
UCHICAGO ARGONNE, LLC (Chicago, IL)
Patent Number(s):
9,834,843
Application Number:
15/165,427
OSTI ID:
1411430
Country of Publication:
United States
Language:
English

References (15)

Effects of the Heat‐Treatment Conditions on the Crystallographic Orientation of Pb(Zr,Ti)O3 Thin Films Prepared by Polyvinylpyrrolidone‐Assisted Sol–Gel Method journal September 2007
Dielectric properties of PLZT film-on-foil capacitors journal July 2008
Chemical solution deposition of ferroelectric lead lanthanum zirconate titanate films on base-metal foils journal January 2008
Effect of polyvinylpyrrolidone on the formation of perovskite phase and rosette-like structure in sol-gel–derived PLZT films journal August 2007
Stress and Cracks in Gel-Derived Ceramic Coatings and Thick Film Formation journal January 2003
Fabrication and dielectric property of ferroelectric PLZT films grown on metal foils journal July 2011
Nucleation- or Growth-Controlled Orientation Development in Chemically Derived Ferroelectric Lead Zirconate Titanate (Pb(ZrxTi1-x)O3, x = 0.4) Thin Films journal February 1996
Effects of sintering temperature on the microstructure and dielectric properties of titanium dioxide ceramics journal July 2010
Development of PLZT dielectrics on base metal foils for embedded capacitors journal January 2010
Improved dielectric properties of lead lanthanum zirconate titanate thin films on copper substrates journal January 2010
Dielectric strength and reliability of ferroelectric PLZT films deposited on nickel substrates journal June 2009
Single‐Step Dip Coating of Crack‐Free BaTiO3 Films >1 μm Thick: Effect of Poly(vinylpyrrolidone) on Critical Thickness journal May 2000
Single-Step Deposition of Gel-Derived Lead Zirconate Titanate Films: Critical Thickness and Gel Film to Ceramic Film Conversion journal November 2002
Preparation and characterization of lead lanthanum zirconate titanate (PLZT) thin films using an organic self-assembled monolayer template journal October 2001
Densification of the PLZT Films Derived from Polymer-Modified Solution by Tailoring Annealing Conditions journal March 2007