Moshe It depend on the wafer's doping concentration.If the doping concentration is high,you can get ohmic contact;otherwise,it's hard to get ohmic contact. I usually use Al to get ohmic contact.Process is as follow: 1)Deposition Al 2)Lithograhy 3)Etch Al 4)Remove PR 5)Alloying 2008-06-18 xudehui0108 发件人: Moshe 发送时间: 2008-06-17 20:37:23 收件人: General MEMS discussion 抄送: 主题: [mems-talk] Ohmic contact Hello ! How I can get ohmic contact? I talk about N type silicon with antimony contamination. What the optimal metal and the process to get ohmic contact between the metal and the silicon ? Thank You