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    • 7. 发明授权
    • Methods of forming capacitors
    • 形成电容器的方法
    • US09159551B2
    • 2015-10-13
    • US12496890
    • 2009-07-02
    • Vassil AntonovVishwanath Bhat
    • Vassil AntonovVishwanath Bhat
    • H01G4/00H01G5/00H01G7/00H01G9/00H01G13/00H01B13/00C23F1/00C23F3/00H01L21/02H01L21/3105H01L49/02
    • H01L21/02356H01L21/02175H01L21/02186H01L21/3105H01L28/65
    • A method of forming a capacitor includes depositing a dielectric metal oxide layer of a first phase to a thickness no greater than 75 Angstroms over an inner conductive capacitor electrode material. The first phase dielectric metal oxide layer has a k of at least 15. Conductive RuO2 is deposited over and into physical contact with the dielectric metal oxide layer. Then, the RuO2 and the dielectric metal oxide layer are annealed at a temperature below 500° C. The RuO2 in physical contact with the dielectric metal oxide during the annealing facilitates a change of the dielectric metal oxide layer from the first phase to a second crystalline phase having a higher k than the first phase. The annealed dielectric metal oxide layer is incorporated into a capacitor dielectric region of a capacitor construction. Other implementations are disclosed.
    • 形成电容器的方法包括在内部导电电容器电极材料上沉积第一相的电介质金属氧化物层至不大于75埃的厚度。 第一相介电金属氧化物层的k至少为15.导电RuO 2沉积在物理接触介电金属氧化物层上。 然后,RuO 2和介电金属氧化物层在低于500℃的温度下退火。退火期间与电介质金属氧化物物理接触的RuO 2促进介电金属氧化物层从第一相到第二晶体的变化 相具有比第一相高的k。 退火的介质金属氧化物层被结合到电容器结构的电容器电介质区域中。 公开了其他实现。