EMITTER WRAP-THROUGH SOLAR CELL AND METHOD OF PREPARING THE SAME

摘要

The present invention relates to an emitter wrap-through solar cell and a method for preparing the same. The solar cell according to the present invention has a structure that may minimize generation of leakage current and minimize energy conversion efficiency measurement error. And, the preparation method of a solar cell according to the present invention may easily confirm the alignment state of the electrode, and thus, provide more improved productivity.

主权项

1. An emitter wrap-through solar cell comprising:
a first conductive type of semiconductor substrate having a front side facing the sun during normal operation and a rear side opposite to the front side, wherein a first trench and a second trench are formed on the rear side while being physically separated, and at least one via-hole penetrating the substrate through the second trench is formed; and a first conductive type of base electrode formed inside of the first trench, and a second conductive type of emitter electrode formed inside of the second trench and the via-hole.