SOLAR CELL AND FABRICATION METHOD THEREOF

摘要

The present invention provides a solar cell and a fabrication method thereof. According to the present invention, the solar cell comprises: a substrate (100) which includes multiple unit cell regions (a) and multiple wiring regions (b) positioned between the unit cell regions (a); lower electrodes (200a) which are formed on the unit cell regions (a) of the substrate (100); lower connection electrodes (200b) which are formed on the wiring regions (b) of the substrate (100), and are connected with one side of the lower electrodes (200a) in the same layer; photoelectric element units (300a) which are formed on the lower electrodes (200a), and include at least one of amorphous photoelectric elements and polycrystalline photoelectric elements; dummy photoelectric elements (300b) which are formed at the edge of the lower connection electrodes (200b) at certain intervals in the same layer as the photoelectric element units (300a); upper electrodes (500) which are formed on the photoelectric element units (300a) and the dummy photoelectric elements (300b), and are electrically connected with the side of the lower connection electrodes (200b) connected to the lower electrodes (200a) of the neighboring unit cell regions (a); and sidewall insulating layers (400) which are positioned on the wiring regions (b) of the substrate (100), and are formed between the upper electrodes (500) and the sides of the lower electrodes (200a) and the photoelectric element units (300a).