Selective emitter solar cell

A manufacturing method of a selective emitter solar cell, the method comprising:

• forming an emitter layer positioned on a light receiving surface of a substrate having a first conductive type, the emitter layer having a second conductive type opposite to the first conductive type at a first impurity concentration;
• forming a high concentration emitter portion having a second impurity concentration higher than the first impurity concentration on the emitter layer;
• and
• forming a plurality of first electrodes and a current collector connected to the high concentration emitter portion after forming a selective emitter structure having the emitter layer and the high concentration emitter portion, each of the plurality of first electrodes having a first line width (W2) and the current collector having a second line width (W1) greater than the first line width,
• wherein the high concentration emitter portion includes;
• a first contact portion having the first line width (W2), and which is in contact with the plurality of first electrodes;
• a first non-contact portion having a third line width (W3), and which is positioned around the first contact portion and is not in contact with the plurality of first electrodes;
• a second contact portion having the second line width (W1), and which is in contact with the current collector;
• and
• a second non-contact portion having a fourth line width (W4), and which is positioned around the second contact portion and is not in contact with the current collector,
• wherein the third line width (W3) is equal to or greater than the first line width (W2) and less than or equal to eight times the first line width (W2), and
• wherein the fourth line width (W4) is greater than the second line width (W1) and less than or equal to 1.4 times the second line width (W1).