Patent ID: 9159551
Filing Date: 2015-10-13
Classification: H01L

Abstract:
1. A method of forming a capacitor, comprising: depositing inner conductive capacitor electrode material over a substrate, the inner conductive capacitor electrode material being selected from the group consisting of conductively doped silicon, elemental titanium, elemental tungsten, elemental ruthenium, elemental platinum, and mixtures thereof; depositing a dielectric metal oxide layer of a first phase to a thickness no greater than 75 Angstroms over the inner conductive capacitor electrode material, the first phase dielectric metal oxide layer having a k of at least 15 and comprising one or more of HfO providing one or more different capacitor dielectric layers intermediate the first phase dielectric metal oxide and the inner conductive capacitor electrode material; depositing amorphous conductive RuO after depositing the conductive RuO after the annealing, etching utilizing an etch chemistry comprising O incorporating the annealed dielectric metal oxide layer into a capacitor dielectric region of a capacitor construction comprising the inner conductive capacitor electrode material and an outer conductive capacitor electrode material comprising the annealed conductive RuO