摘要
提出了一套采用扩散工艺在低掺杂的硅衬底上选择性形成多孔硅牺牲层 ,并制作了 MEMS器件结构的工艺流程 ,进行了工艺流水 .对得到的结果进行了详细的讨论 .对于
Forming porous silicon selectively which is used as a sacrificial layer on the low doped silicon substrate by using diffusion process and then fabricating free standing microstructures is presented.A process run is made and the results of the experiment are discussed in detail.The technology of removal porous silicon using KOH solution is also studied.