公开(公告)号：US20210217907A1

公开(公告)日：2021-07-15

申请号：US17055370

申请日：2019-06-21

Applicant: JINGAO SOLAR CO., LTD.

Inventor： Xiaoye CHEN ,  Wenjuan XUE ,  Xiulin JIANG ,  Haipeng YIN

IPC: H01L31/0216 ,  H01L31/18 ,  H01L31/0224 ,  H01L31/0368

Abstract: The disclosure relates to a crystalline silicon solar cell and a preparation method, and a photovoltaic module, belonging to the technical field of solar cells. The crystalline silicon solar cell includes a gallium oxide layer in direct contact with a P-type silicon layer in the crystalline silicon solar cell. In the disclosure, the gallium oxide layer in direct contact with the P-type silicon layer is arranged on the P-type silicon layer of the crystalline silicon solar cell, negative charges of the gallium oxide layer are used to carry out chemical passivation and field passivation on a surface of the P-type silicon layer, and the number of dangling bonds and minority carriers of silicon atoms on the surface of the P-type silicon layer is reduced, so that a minority carrier recombination rate at the surface of the P-type silicon layer is reduced, the voltage and current of the solar cell are improved, and photovoltaic conversion efficiency of the solar cell is improved, thus improving output power of the photovoltaic module, reducing cost per kilowatt hour of electricity and improving cost performance of photovoltaic power generation. In addition, the gallium oxide layer has a relatively wide band gap and an appropriate optical refractive index, and also facilitates improvement of the performance of the crystalline silicon solar cell.

公开(公告)号：US20220320356A1

公开(公告)日：2022-10-06

申请号：US17614310

申请日：2020-08-28

Applicant: JINGAO SOLAR CO., LTD.

Inventor： Daoyuan CHEN ,  Wenjuan XUE ,  Yanfang ZHOU ,  Shuang ZHAO ,  Jian LI

IPC: H01L31/052 ,  H01L31/18 ,  H01L31/046 ,  H01L31/049

Abstract: At least some embodiments of the present disclosure provide a back sheet of a photovoltaic module, a photovoltaic modules and a manufacturing method thereof. The photovoltaic module includes: a plurality of battery cells arranged in an array and configured to receive light and generate power; and a thermally conductive layer in a mesh shape, including a skeleton section and a hollow section surrounded by the skeleton section. In the thickness direction of the photovoltaic module, at least a part of the skeleton section overlaps with a gap between adjacent battery cells, and the hollow section overlaps with the battery cell. The photovoltaic module can conduct the heat at the hot spot of the photovoltaic module in time while ensuring the power generation efficiency of the photovoltaic module, thus improving the stability of the photovoltaic module.