Patent ID: 9355761
Filing Date: 2016-05-31
CPC Classification: C04B,C23C,H01B,H01L,Y10T

Claim Text:
1. A process for forming a crack-free dielectric comprising: providing a substrate; depositing a first dielectric precursor sol-gel layer having a thickness from about 0.3 μm to about 1.0 μm on the substrate; heating the first dielectric precursor sol-gel layer at a preheat temperature from about 100° C. to about 200° C. for a preheat temperature heating time from about 1 minute to about 30 minutes; initiating a three temperature step-wise preheat treatment comprising increasing the temperature from about 275° C. to about 325° C. in a pre-pyrolysis step and maintaining the temperature at the pre-pyrolysis temperature for a pre-pyrolysis period of time; increasing the temperature from about 375° C. to about 425° C. in a first pyrolysis step and maintaining the temperature at the first pyrolysis temperature for a first pyrolysis period of time; increasing the temperature from about 425° C. to about 475° C. in a second pyrolysis step and maintaining the temperature at a second pyrolysis temperature for a second pyrolysis period of time; initializing a crystallization treatment comprising increasing the temperature from about 600° C. to about 800° C. for a period of time to crystallize at least one layer wherein all heat treatments were performed in an ambient atmosphere and wherein temperature changes are achieved by moving the film into different zones; and repeating the deposition step, initial heating step, pyrolyzing and crystallization steps to form a dielectric precursor layer having a total thickness from about 1.5 μm to about 20.0 μm on the substrate.