Treatment of silicon prior to nickel silicide formation
    3.
    发明授权
    Treatment of silicon prior to nickel silicide formation 有权
    在硅化镍形成之前处理硅

    公开(公告)号:US07132365B2

    公开(公告)日:2006-11-07

    申请号:US10914928

    申请日:2004-08-10

    IPC分类号: H01L21/4763

    CPC分类号: H01L21/28518 H01L21/76829

    摘要: A method of preparing a die comprises treating exposed silicon to form an oxide prior to silicide formation; and depositing metal on the oxide. The metal may comprise titanium, cobalt, nickel, platinum, palladium, tungsten, molybdenum, or combinations thereof on the oxide. The oxide may be less than or equal to about 15 angstroms thick. In various embodiments, treating exposed silicon to form an oxide comprises forming a non-thermal oxide. Treating exposed silicon to form an oxide may also comprise treating the exposed silicon with an oxidizing plasma; alternatively, treating exposed silicon to form an oxide may comprise forming a chemical oxide. In certain other embodiments, treating exposed silicon to form an oxide comprises treating exposed silicon with a solution comprising ammonium hydroxide, hydrogen peroxide, and water; hydrochloric acid, hydrogen peroxide, and water; hydrogen peroxide; ozone; ozonated deionized water; or combinations thereof.

    摘要翻译: 制备模具的方法包括在硅化物形成之前处理暴露的硅以形成氧化物; 并在氧化物上沉积金属。 金属可以在氧化物上包含钛,钴,镍,铂,钯,钨,钼或其组合。 氧化物可以小于或等于约15埃厚。 在各种实施方案中,处理暴露的硅以形成氧化物包括形成非热氧化物。 处理暴露的硅以形成氧化物还可以包括用氧化等离子体处理暴露的硅; 或者,处理暴露的硅以形成氧化物可包括形成化学氧化物。 在某些其他实施方案中,处理暴露的硅以形成氧化物包括用包含氢氧化铵,过氧化氢和水的溶液处理暴露的硅; 盐酸,过氧化氢和水; 过氧化氢; 臭氧; 臭氧化去离子水; 或其组合。