SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING SAME

    公开(公告)号:EP4033519A1

    公开(公告)日:2022-07-27

    申请号:EP20864989.7

    申请日:2020-06-18

    摘要: To provide a technique capable of improving performance and reliability of a semiconductor device. An n - -type epitaxial layer (12) is formed on an n-type semiconductor substrate (11), and a p + -type body region (14), n + -type current spreading regions (16, 17), and a trench TR are formed in the n - -type epitaxial layer (12). A bottom surface B1 of the trench TR is located in the p + -type body region (14), a side surface S1 of the trench TR is in contact with the n + -type current spreading region (17), and a side surface S2 of the trench TR is in contact with the n + -type current spreading region (16). Here, a ratio of silicon is higher than a ratio of carbon in an upper surface T1 of the r - -type epitaxial layer (12), and the bottom surface B1, the side surface S1, and the side surface S2 of the trench. Furthermore, an angle θ1 at which the upper surface T1 of the n - -type epitaxial layer (12) is inclined with respect to the side surface S1 is smaller than an angle θ2 at which the upper surface T1 of the n - -type epitaxial layer (12) is inclined with respect to the side surface S2.

    SOLAR CELL
    8.
    发明公开
    SOLAR CELL 审中-公开

    公开(公告)号:EP3893285A1

    公开(公告)日:2021-10-13

    申请号:EP19894255.9

    申请日:2019-04-12

    摘要: The present invention relates to a method for manufacturing a solar cell, the method comprising the steps of: preparing a substrate; forming an adhesive layer on the substrate; and forming, on the adhesive layer, a perovskite solar cell having a perovskite absorption layer, wherein an optical treatment step of providing light is performed at least once between the step of preparing the substrate and the step of forming the perovskite solar cell.