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    • 9. 发明申请
    • Method for cleaning substrate having exposed silicon and silicon germanium layers and related method for fabricating semiconductor device
    • 用于清洁具有暴露的硅和锗锗层的衬底的方法和用于制造半导体器件的相关方法
    • US20070072431A1
    • 2007-03-29
    • US11527473
    • 2006-09-27
    • Chang-Sup MunWoo-Gwan ShimHan-Ku ChoChang-Ki HongDoo-Won Kwon
    • Chang-Sup MunWoo-Gwan ShimHan-Ku ChoChang-Ki HongDoo-Won Kwon
    • H01L21/302H01L21/461
    • H01L21/02057H01L21/02082
    • A method for cleaning a substrate on which a silicon layer and a silicon germanium layer are formed and exposed, and method for fabricating a semiconductor device using the cleaning method are disclosed. The cleaning method comprises preparing a semiconductor substrate on which a silicon layer and a silicon germanium layer are formed and exposed; and performing a first cleaning sub-process that uses a first cleaning solution to remove a native oxide layer from the semiconductor substrate. The cleaning method further comprises performing a second cleaning sub-process on the semiconductor substrate after performing the first cleaning sub-process, wherein the second cleaning sub-process comprises using a second cleaning solution. In addition, the second cleaning solution comprises ammonium hydroxide (NH4OH), hydrogen peroxide (H2O2), and deionized water (H2O), and the second cleaning solution comprises at least 200 times more deionized water (H2O) than ammonium hydroxide (NH4OH) by volume.
    • 公开了一种用于清洁其上形成和暴露硅层和硅锗层的衬底的方法,以及使用该清洁方法制造半导体器件的方法。 该清洗方法包括:制备半导体衬底,在其上形成和暴露硅层和硅锗层; 以及执行使用第一清洁溶液从半导体衬底去除自然氧化物层的第一清洁子过程。 清洁方法还包括在执行第一清洁子过程之后在半导体衬底上执行第二清洁子处理,其中第二清洁子处理包括使用第二清洁溶液。 此外,第二清洗溶液包括氢氧化铵(NH 4 OH),过氧化氢(H 2 O 2 O 2)和去离子水( H 2 O),并且第二清洁溶液包含比氢氧化铵(NH 4 O 2)少至少200倍的去离子水(H 2 O 2 O) OH)。