A solar cell comprising: a semiconductor substrate; a plurality of first electrodes and a plurality of second electrodes which are formed to be separated from each other on a back surface of the semiconductor substrate; an insulating member including a first auxiliary electrode connected to the plurality of first electrodes and a second auxiliary electrode connected to the plurality of second electrodes, wherein the plurality of first electrodes and the first auxiliary electrode are connected to each other using a conductive adhesive including a resin layer (ECA-I1) and conductive metal particles (ECA-CP) distributed in the resin layer, and the plurality of second electrodes and the second auxiliary electrode are connected to each other using the conductive adhesive, an insulating layer (IL, IL-I2) formed between the first auxiliary electrode and the second auxiliary electrode on the insulating member; and an interconnector connected to the first auxiliary electrode and the second auxiliary electrode for connecting adjacent solar cells of the plurality of solar cells; wherein, the resin layer included in the conductive adhesive and an insulating resin layer (IL-I2) of the insulating layer contain the same resin material, the resin layer included in the conductive adhesive and the insulating resin layer (IL-I2) of the insulating layer contain at least one of an epoxy-based resin, an acrylic-based resin, and a silicon-based resin, and the resin layer of the conductive adhesive and the insulating resin layer (IL-I2) of the insulating layer have the same curing temperature and the same coefficient of expansion, one semiconductor substrate and one insulating member are attached to each other to form an individual integrated type element, the interconnector is positioned between two semiconductor substrates of adjacent two solar cells and not overlapped with the two semiconductor substrates of adjacent two solar cells, and has an area that is not overlapped with each of the two insulating members of adjacent two solar cells and has other area that is overlapped with each of the two insulating members of adjacent two solar cells. a semiconductor substrate; a plurality of first electrodes and a plurality of second electrodes which are formed to be separated from each other on a back surface of the semiconductor substrate; an insulating member including a first auxiliary electrode connected to the plurality of first electrodes and a second auxiliary electrode connected to the plurality of second electrodes, wherein the plurality of first electrodes and the first auxiliary electrode are connected to each other using a conductive adhesive including a resin layer (ECA-I1) and conductive metal particles (ECA-CP) distributed in the resin layer, and the plurality of second electrodes and the second auxiliary electrode are connected to each other using the conductive adhesive, an insulating layer (IL, IL-I2) formed between the first auxiliary electrode and the second auxiliary electrode on the insulating member; and an interconnector connected to the first auxiliary electrode and the second auxiliary electrode for connecting adjacent solar cells of the plurality of solar cells; wherein, the resin layer included in the conductive adhesive and an insulating resin layer (IL-I2) of the insulating layer contain the same resin material, the resin layer included in the conductive adhesive and the insulating resin layer (IL-I2) of the insulating layer contain at least one of an epoxy-based resin, an acrylic-based resin, and a silicon-based resin, and the resin layer of the conductive adhesive and the insulating resin layer (IL-I2) of the insulating layer have the same curing temperature and the same coefficient of expansion, one semiconductor substrate and one insulating member are attached to each other to form an individual integrated type element, the interconnector is positioned between two semiconductor substrates of adjacent two solar cells and not overlapped with the two semiconductor substrates of adjacent two solar cells, and has an area that is not overlapped with each of the two insulating members of adjacent two solar cells and has other area that is overlapped with each of the two insulating members of adjacent two solar cells.