Solar cell and solar cell panel including the same

Abstract

Disclosed is a solar cell panel including: a semiconductor substrate having a long axis and a short axis that intersect; a first conductivity type region formed on one surface of the semiconductor substrate; a second conductivity type region formed on the other surface of the semiconductor substrate; a first electrode electrically connected to the first conductivity type region; and a second electrode electrically connected to the second conductivity type region. The first electrode includes: a plurality of finger lines positioned in a first direction parallel to the long axis and being parallel to each other; and a plurality of bus bars including a plurality of pad portions positioned in a second direction parallel to the short axis. The plurality of pad portions include a first outer pad and a second outer pad located on opposite ends of the plurality of bus bars in the second direction, respectively.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Korean Patent Application No. 10-2016-0163559 filed on Dec. 2, 2016, the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION1. Field of the invention[0002]Embodiments of the invention relate to a solar cell and a solar cell panel including the same, and, more particularly, to a solar cell improved in structure and a solar cell panel including the same.2. Description of the Related Art[0003]Recently, as existing energy resources such as petroleum and coal are expected to be depleted, interest in alternative energy to replace them is increasing. Among them, solar cells are attracting attention as a next-generation battery that converts solar energy into electric energy.[0004]A plurality of solar cells are connected in series or in parallel by a ribbon, and are then packaged through a packaging process for protecting the plurality of solar cells, thereby forming a...

AI Technical Summary

Benefits of technology

The invention aims to improve the efficiency and output of solar cells and panels by minimizing light loss and reducing the movement path of carriers. This can be achieved by using a bus bar with a small width or lead with a wire shape, and increasing the number of bus bars or leads. By applying a lead to the solar cell with a long axis and short axis, and positioning outer pads at both sides in the short axis direction, the movement path through the lead can be minimized and the attachment property of the lead can be enhanced.

Problems solved by technology

Solar cell panels require long-term reliability because they must generate electricity for a long time in various environments.

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