Abstract: A solar cell and preparation method. The solar cell includes silicon substrate having first or second polarity, where the substrate includes first and second sides opposite to each other; first passivation structure on first side of the substrate, a portion of first structure farthest from the substrate having first polarity and a position where first structure is located being first electrode region; second passivation structure on a side of first structure away from the substrate, a portion of second structure farthest from the substrate having second polarity and a position where second structure is located being second electrode region, second and first electrode regions are not overlapped and second structure has a process temperature lower than first structure; and first electrode in first region on a side of second structure away from the substrate and second electrode in second region on a side of second structure away from the substrate.

Abstract: A laminated passivation structure of solar cell and a preparation method thereof are disclosed herein. The laminated passivation structure of solar cell includes a P-type silicon substrate, a first dielectric layer, a second dielectric layer, and a third dielectric layer sequentially arranged on the back side of the P-type silicon substrate from inside to outside. The preparation method includes generating a first dielectric layer on the back surface of the P-type silicon substrate, and then sequentially depositing a second dielectric layer and a third dielectric layer on the first dielectric layer.

Abstract: The present invention discloses a method for recognizing a seawater polluted area based on a high-resolution remote sensing image and a device and belongs to the field of digital image processing.

Abstract: A server receives an association request initiated by a user of a first account. Based on the association request, an account identifier of a second account is identified. The first account is associated with the second account based on the account identifier. In response to associating the first account with the second account, a partial permission is granted to the first account for accessing the second account.

Abstract: A server receives an association request initiated by a user of a first account. Based on the association request, an account identifier of a second account is identified. The first account is associated with the second account based on the account identifier. In response to associating the first account with the second account, a partial permission is granted to the first account for accessing the second account.

Abstract: A server receives an association request initiated by a user of a first account. Based on the association request, an account identifier of a second account is identified. The first account is associated with the second account based on the account identifier. In response to associating the first account with the second account, a partial permission is granted to the first account for accessing the second account.

Abstract: A server receives an association request initiated by a user of a first account. Based on the association request, an account identifier of a second account is identified. The first account is associated with the second account based on the account identifier. In response to associating the first account with the second account, a partial permission is granted to the first account for accessing the second account.