| 摘要 |
A dual-pixel full color CMOS imager comprises a two-photodiode stack including an n doped substrate, a bottom photodiode, and a top photodiode. The bottom photodiode has a bottom p doped layer at a first depth overlying the substrate and a bottom n doped layer cathode overlying the bottom p doped layer. The top photodiode has a top p doped layer overlying the bottom n doped layer and a top n doped layer cathode overlying the top p doped layer. A single photodiode including a bottom p doped layer overlies the substrate at a third depth. The third depth is less than, or equal to the first depth. A bottom n doped layer overlies the bottom p doped layer, a top p doped layer directly overlies the bottom n doped layer without an intervening layer, and a top n doped layer overlies the top p doped layer.
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