Solar cell and solar cell module using the same

Abstract

Provided is a solar cell module having improved energy efficiency. The solar cell module includes a frame, first solar cells arranged at the frame, and second solar cells smaller than the first solar cells. The second solar cells are disposed in regions surrounded by the first solar cells. The first solar cells have a substantially circular shape. The second solar cells have a rectangular shape, and each of the second solar cells is surrounded by four of the first solar cells.

Description

technical field [0001] The present invention relates to a solar cell, and more particularly, to a solar cell including an electrode on which sunlight is incident on a front surface and a solar cell module using the same. Background technique [0002] In a solar cell, the absorption of light leads to the generation of electron-hole pairs in the semiconductor, and the electric field formed at the P-N junction of the semiconductor moves the electrons to the N-type side of the semiconductor and the holes to the P-type side of the semiconductor, thereby generating current. [0003] Generally, at least one of a P-type electrode and an N-type electrode of a solar cell is disposed on the rear surface of the substrate. If the metal electrode covers the front surface of the substrate, the absorption of sunlight decreases in proportion to the area covered by the metal electrode. This is called shading loss. Solar cells can be formed using circular silicon wafers. refer to figure 1...

AI Technical Summary

Problems solved by technology

However, this arrangement of solar cells on the frame results in a dead area where sunlight cannot be absorbed due to the absence of solar cells

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