SOLAR CELL AND METHOD FOR PRODUCING SAME

• Main Authors: OKU, RYOSUKE, OGINO, TAKAYUKI, KANO, YASUYUKI, GODA, SHINJI, ISHIKAWA, NAOKI, KATO, FUTOSHI
• Format: Patent
• Language: English; French; German
• Published: 06.07.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

[Problem] To provide a solar battery cell such that higher conversion efficiency than ever before is achieved and conversion efficiency of its front surface and conversion efficiency of its rear surface become almost equivalent in a double-sided light-receiving type solar battery cell. [Solution] There is provided a solar battery cell including: an n-type silicon substrate having a thickness of not less than 100 µm nor more than 250 µm; a p-type diffusion layer formed on a first light-receiving surface being a front surface of the silicon substrate; an n-type diffusion layer formed on a second light-receiving surface being a rear surface of the silicon substrate; an anti-reflection film formed on the p-type diffusion layer and the n-type diffusion layer; a plurality of grid electrodes and a plurality of busbar electrodes that are formed on part of the p-type diffusion layer; and a plurality of grid electrodes and a plurality of busbar electrodes that are formed on part of the n-type diffusion layer.