Abstract: This disclosure provides back contact cell and solar cell module.

Abstract: A solar cell is provided. The solar cell includes a semiconductor substrate. The front surface of the semiconductor substrate has a metal contact area and a non-metal contact area. A first tunneling layer, a first doped polysilicon layer and a first metal electrode are sequentially stacked on the metal contact area. The first metal electrode is electrically connected to the first doped polysilicon layer. A second tunneling layer, a second doped polysilicon layer and a second metal electrode are sequentially stacked on the back surface of the semiconductor substrate.

Abstract: A solar cell includes a semiconducting substrate, a first emitter, an insulating layer, and a second emitter. The semiconducting substrate includes a first surface and a second surface, and includes a first region and a second region. The first region includes a first sub-region and a second sub-region. The first sub-region is in contact with the second region. The first direction is perpendicular to the thickness direction of the semiconducting substrate. The first emitter is disposed on the first surface and in the first region. The insulating layer is disposed on the first emitter and in the first sub-region. The second emitter is disposed on the first surface. The second emitter includes a first sub-emitter and a second sub-emitter. The first sub-emitter is located on the second region. The second sub-emitter is disposed on the insulating layer. Electrical conduction exists between the first emitter and the first sub-emitter.

Abstract: The present disclosure provides a gate line structure of a solar cell and a solar cell applying same. The structure comprises a plurality of main gate lines extending along a first direction and arranged at intervals along a second direction, and a plurality of thin gate lines extending along the second direction and arranged at intervals along the first direction, wherein the first direction and the second direction are not parallel, the plurality of main gate lines are electrically connected to the plurality of thin gate lines respectively, and between any two adjacent main gate lines, each thin gate line has a disconnected section. According to the gate line structure of a solar cell and a solar cell applying same of the present disclosure, silver paste consumption can be effectively reduced while ensuring cell efficiency, reducing the preparation costs of a solar cell.

Abstract: A solar cell, a preparation method thereof, and a photovoltaic module. The solar cell includes a semiconductor substrate, a first substrate doped layer, a second substrate doped layer, a first passivation layer, and a first doped semiconductor layer. The semiconductor substrate includes a first surface, and the first surface includes a first region and a second region adjacent to the first region along a first direction. The first substrate doped layer is located in the first region. The second substrate doped layer is located in the second region, and the first substrate doped layer is connected to the second substrate doped layer. The first passivation layer is located on a side of the second substrate doped layer away from the semiconductor substrate. The first doped semiconductor layer is located on a side of the first passivation layer away from the semiconductor substrate.

Abstract: A back-contact solar cell comprises a silicon substrate having a front surface and a back surface opposite to each other, and the silicon substrate is of a first doping type; and a first emitter, a first isolation region, a second isolation region, and a second emitter disposed on the back surface of the silicon substrate, wherein the first isolation region and the second isolation region are disposed between the first emitter and the second emitter in a first direction, the first emitter is of a second doping type, the first isolation region and the second emitter are of the first doping type, and the first direction intersects a thickness direction of the silicon substrate.

Abstract: A back contact solar cell comprises a silicon substrate which has a front surface and a back surface that opposed to each other, the silicon substrate is a first doping type; a first emitter and a second emitter are arranged on the back surface of the silicon substrate; the first emitter is of the second doping type, the second emitter is of the first doping type. The back contact solar cell further comprises a second isolation region surrounds a first isolation region, and the second isolation region surrounds the second emitter; comprising a second electrode which has a first part and a second part, a first part of is in contact with the second emitter, a second part of the second electrode is provided on a side of the corresponding the first emitter away from the silicon substrate, the first isolation region surrounds the first part of the second electrode, or the entire second electrode is in contact with the second emitter, and the first isolation region surrounds the entire second electrode.

Abstract: The present disclosure provides a solar cell including a substrate, a first emitter, a second emitter, an insulating spacing structure, a first electrode, and a second electrode. The substrate includes a front surface and a back surface opposite to each other. The first emitter and the second emitter are disposed on the back surface of the substrate. The first electrode is disposed on a side of the first emitter away from the substrate, and the first electrode is electrically connected to the first emitter. The second electrode is disposed on a side of the second emitter away from the substrate, and the second electrode is electrically connected to the second emitter. The insulating spacing structure is disposed between the first emitter and the second emitter, and the first emitter and the second emitter are spaced from each other by the insulating spacing structure.

Abstract: A method for estimating a thickness for each of a plurality of nested tubulars may comprise disposing an electromagnetic (EM) logging tool in a wellbore. The method may further comprise transmitting an electromagnetic field from the transmitter into one or more tubulars to energize the one or more tubulars with the electromagnetic field thereby producing an eddy, forming a measurement log from the plurality of measurements, and solving a first inverse problem with uniform priors to obtain a first set of estimated tubular parameters. The method may further comprise designing a data-driven prior based on the first set of estimated tubular parameters, solving a second inverse problem with the data-driven prior to obtain a second set of estimated tubular parameters, and using the second set of estimated tubular parameters to make informed decisions on the integrity of the well casings.