发明名称 |
Photodiode with ultra-shallow junction for high quantum efficiency CMOS image sensor and method of formation |
摘要 |
A pinned photodiode with an ultra-shallow highly-doped surface layer of a first conductivity type and a method of formation are disclosed. The ultra-shallow highly-doped surface layer has a thickness of about 100 Angstroms to about 500 Angstroms and a dopant concentration of about 5x10<SUP>17 </SUP>atoms per cm<SUP>3 </SUP>to about 1x10<SUP>19 </SUP>atoms per cm<SUP>3</SUP>. The ultra-shallow highly-doped surface layer is formed by diffusion of ions from a doped layer into the substrate or by a plasma doping process. The ultra-shallow pinned layer is in contact with a charge collection region of a second conductivity type.
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申请公布号 |
US7122408(B2) |
申请公布日期 |
2006.10.17 |
申请号 |
US20030648245 |
申请日期 |
2003.08.27 |
申请人 |
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发明人 |
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分类号 |
H01L21/332;H01L21/00;H01L21/338;H01L21/8238;H01L27/00;H01L27/146;H01L27/148;H01L29/74;H01L31/00;H01L31/0352;H01L31/062;H01L31/101 |
主分类号 |
H01L21/332 |
代理机构 |
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地址 |
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