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    • 9. 发明授权
    • Method for forming refractory metal nitride film
    • 形成难熔金属氮化物膜的方法
    • US5665209A
    • 1997-09-09
    • US437893
    • 1995-05-10
    • Jeong Soo Byun
    • Jeong Soo Byun
    • C30B25/06C23C14/06C23C14/58C30B29/38H01L21/28H01L21/285H01L21/318C23C14/00
    • C23C14/5806C23C14/0641C23C14/58C23C14/5893H01L21/2855H01L21/76841H01L21/76856
    • A method for forming a refractory metal nitride film having excellent diffusion barrier properties suitable for a dielectric electrode includes a step of depositing a refractory metal film containing nitrogen on a silicon substrate in a mixed gas atmosphere of Ar and N.sub.2, such that the volumetric content of the nitrogen in the mixed gas does not exceed 20%, and a step of forming a completed refractory metal film by subjecting the refractory metal film to a heat treatment in an N.sub.2 or NH.sub.3 atmosphere. The content of nitrogen in the refractory metal film depends on the content of nitrogen in the ambient gas, and the ratio of nitrogen contained in the refractory metal film to the refractory metal does not exceed unity. The refractory metals may be any of the transition metals in Groups IVB, VB, and VIB of the periodic table.
    • 一种形成具有适合于电介质电极的扩散阻挡性优异的难熔金属氮化物膜的方法包括在Ar和N2的混合气体气氛中,在硅衬底上沉积含有氮的难熔金属膜的步骤, 混合气体中的氮不超过20%,并且通过使耐火金属膜在N 2或NH 3气氛中进行热处理来形成完成的难熔金属膜的步骤。 难熔金属膜中的氮含量取决于环境气体中氮的含量,并且难熔金属膜中的氮与难熔金属的比例不超过1。 难熔金属可以是元素周期表的IVB,VB和VIB族中的任何过渡金属。