Test method for thickness of lightly doped silicon epitaxial layers on heavily doped silicon substrates by infrared reflectance
全国半导体设备和材料标准化技术委员会材料分技术委员会(SAC/TC 203/SC 2)
本标准规定重掺杂衬底上轻掺杂硅外延层厚度的红外反射测量方法。
本标准适用于衬底在23 ℃电阻率小于0.02 Ω·cm和外延层在23 ℃电阻率大于0.1 Ω·cm且外延层厚度大于2 μm的n型和p型硅外延层厚度的测量；在降低精度情况下，该方法原则上也适用于测试0.5 μm～2 μm之间的n型和p型外延层厚度。
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