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Evaluation method of a silicon substrate, the manufacturing method of the contamination detection methods and the epitaxial substrate
Evaluation method of a silicon substrate, the manufacturing method of the contamination detection methods and the epitaxial substrate
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机译:硅基板的评价方法,污染检测方法的制造方法以及外延基板
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摘要
PROBLEM TO BE SOLVED: To provide a method of evaluating a silicon substrate, in which a metal impurity concentration in the substrate is accurately evaluated with high sensitivity by suppressing recombination on a substrate surface more than before.;SOLUTION: The method of evaluating the silicon substrate, in which metal contamination of the silicon substrate is evaluated in a microwave photoconductive decay method minority carrier lifetime method, is characterized by measuring a wafer lifetime value in the silicon substrate by injecting carriers at 1×1012 to 1×1013 Photons/cm2 when the silicon substrate is a P-type silicon substrate or at 1×1014 to 5×1014 Photons/cm2 when the silicon substrate is an N-type silicon substrate for microwave photoconductive decay method minority carrier excitation after forming a passivation film by chemical passivation method on the surface of the silicon substrate.;COPYRIGHT: (C)2010,JPO&INPIT
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机译:解决的问题:提供一种评估硅基板的方法,其中通过比以往更多地抑制基板表面上的复合,以高灵敏度准确地评估基板中的金属杂质浓度。;解决方案:评估硅的方法通过微波光导衰减法,少数载流子寿命方法评估硅衬底的金属污染的衬底,其特征在于通过以1×10 12 Sup>注入载流子来测量硅衬底中的晶片寿命值当硅基板是P型硅基板时或在1×10 14 Sup>至5×时,达到1×10 13 Sup>光子/ cm 2 Sup>。当硅衬底是用于微波光电导衰减法的N型硅衬底时,在其上通过化学钝化方法在钝化膜上形成钝化膜后,10 14 Sup>光子/ cm 2 Sup>硅基板的表面。 ;版权:(C)2010,JPO&INPIT
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