发明申请
- 专利标题: DAMAGE-AND-RESIST-FREE LASER PATTERNING OF DIELECTRIC FILMS ON TEXTURED SILICON
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申请号: US15280247申请日: 2016-09-29
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公开(公告)号: US20170117432A1公开(公告)日: 2017-04-27
- 发明人: Mark Scott Bailly
- 申请人: Mark Scott Bailly
- 主分类号: H01L31/18
- IPC分类号: H01L31/18 ; H01L31/068 ; H01L31/0216 ; H01L31/0224 ; H01L31/028
摘要:
In accordance with embodiments disclosed herein, there are provided methods and systems for implementing damage-and-resist-free laser patterning of dielectric films on textured silicon. For example, in one embodiment, such means include means for depositing a Silicon nitride (SiNx) or SiOx (silicon oxide) layer onto a crystalline silicon (c-Si) substrate by a Plasma Enhanced Chemical Vapor Deposition (PECVD) processing; depositing an amorphous silicon (a-Si) film on top of the SiNx or SiOx layer; patterning the a-Si film to define an etch mask for the SiNx or SiOx layer; removing the SiNx or SiOx layer via a Buffered Oxide Etch (BOE) chemical etch to expose the c-Si surface; removing the a-Si mask with a hydrogen plasma etch in a PECVD tool to prevent current loss from the mask; and plating the exposed c-Si surface with metal contacts. Other related embodiments are disclosed.
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