芯片制造工艺问答025:N-well implant打入P31, 120KeV. 请估计光阻厚度最少应有多厚?
Ans 一般光阻厚度必须至少等于离子植入Projection range (Rp) 加上四倍的 Projected standard deviation (DRp),
usually define PR thickness as 0.0001% transmission, from data table: P31 @Energy = 120keV, PR masking
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