Solar cell module and methods for fabricating the same

A solar cell module, comprising:

• a first solar cell and a second solar cell adjacent to the first solar cell;
• and
• a wiring member,
• wherein each of the first solar cell and the second solar cell has a long axis and a short axis,
• each of the first solar cell and the second solar cell has a front surface, a back surface, a first side surface, a second side surface opposite to the first side surface along the short axis, a third side surface, and a fourth side surface opposite to the third side surface along the long axis,
• each of the first and second solar cells includes a front electrode disposed on the front surface, a back electrode disposed on the back surface, and a protrusion formed on the back surface and near the second side surface, and the protrusion extends perpendicular to the short axis and parallel to the long axis,
• the second side surface is a cut surface, and the first side surface of the first solar cell is disposed to face the second side surface of the second solar cell,
• the wiring member electrically connects the back electrode of the first solar cell and the front electrode of the second solar cell by extending between the first side surface of the first solar cell and the second side surface of the second solar cell, and the wiring member does not contact the protrusion of the first solar cell and the protrusion of the second solar cell,
• the protrusion is conductive,
• a gap between the first side surface of the first solar cell and the second side surface of the second solar cell ranges from 0.5 mm to 1.5 mm,
• a thickness of the wiring member is approximately 270 μm to 320 μm,
• the wiring member includes a core layer of metal, and a solder layer formed surrounding a surface of the core layer and including a solder material, and a thickness of the core layer is approximately 240 μm to 280 μm, and
• a number of the wiring member electrically connecting the back electrode of the first solar cell and the front electrode of the second solar cell is 8-12.