| 摘要 |
An image sensor with a plurality of photodiodes that each have a first region constructed from a first type of material and a second region constructed from a second type of material. Located adjacent to the first region and between second regions of adjacent photodiodes is a barrier region. The photodiodes are reversed biased to create depletion regions within the first regions. The barrier region limits the lateral growth of the depletions regions and inhibits depletion merger between adjacent photodiodes.
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