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    • 52. 发明申请
    • IMAGE SENSOR CELLS
    • 图像传感器细胞
    • US20070108485A1
    • 2007-05-17
    • US11619024
    • 2007-01-02
    • James AdkissonJohn Ellis-MonaghanJeffrey GambinoMark JaffeRichard Rassel
    • James AdkissonJohn Ellis-MonaghanJeffrey GambinoMark JaffeRichard Rassel
    • H01L31/113H01L21/00
    • H01L27/14609H01L27/1463H01L27/14641H01L27/14643H01L31/035281
    • A structure (and method for forming the same) for an image sensor cell. The method includes providing a semiconductor substrate. Then, a charge collection well is formed in the semiconductor substrate, the charge collection well comprising dopants of a first doping polarity. Next, a surface pinning layer is formed in the charge collection well, the surface pinning layer comprising dopants of a second doping polarity opposite to the first doping polarity. Then, an electrically conductive push electrode is formed in direct physical contact with the surface pinning layer but not in direct physical contact with the charge collection well. Then, a transfer transistor is formed on the semiconductor substrate. The transfer transistor includes first and second source/drain regions and a channel region. The first and second source/drain regions comprise dopants of the first doping polarity. The first source/drain region is in direct physical contact with the charge collection well.
    • 用于图像传感器单元的结构(及其形成方法)。 该方法包括提供半导体衬底。 然后,在半导体衬底中形成电荷收集阱,电荷收集阱包含第一掺杂极性的掺杂剂。 接下来,在电荷收集阱中形成表面钉扎层,表面钉扎层包括与第一掺杂极性相反的第二掺杂极性的掺杂剂。 然后,导电的推动电极形成为与表面钉扎层直接物理接触,但不与电荷收集阱直接物理接触。 然后,在半导体衬底上形成传输晶体管。 传输晶体管包括第一和第二源极/漏极区域和沟道区域。 第一和第二源/漏区包括第一掺杂极性的掺杂剂。 第一源极/漏极区域与电荷收集阱直接物理接触。