Solar cell and manufacturing method thereof

A solar cell comprises a first type doping substrate or a second type doping substrate. The substrate is provided with a first surface and a second surface opposite to the first surface, and the substrate comprises a first type doping area and a second type doping area. The first type doping area and the second type doping area are both placed on the first surface of the substrate. A first base chip is arranged on the side surface, adjacent to the first doping area, of the substrate, and a second base chip is arranged on the side surface, adjacent to the second doping area, of the substrate. Correspondingly, the invention further provides a manufacturing method of the solar cell, a solar cell component which is composed of the solar cell and a manufacturing method of the solar cell component. Compared with the prior art, under the condition that the solar cell is thin, the solar cell can effectively collect photon-generated carriers, and therefore the ampere density of the solar cell and the photoelectric conversion efficiency of the solar cell are improved.