Patent ID: 9711667
Date: 2017-07-18
CPC Classifications: C25D,H01L,H05K,Y02E

Claim:
1. A solar cell, comprising: a single crystalline semiconductor substrate having a first type conductivity; a non-single crystalline emitter layer formed on a front surface of the single crystalline semiconductor substrate, wherein the non-single crystalline emitter layer has a second type conductivity opposite of the first type conductivity; a first transparent conductive oxide layer positioned on the non-single crystalline emitter layer; a second transparent conductive oxide layer positioned over a rear surface of the single crystalline semiconductor substrate; a first electrode part positioned on the first transparent conductive oxide layer and electrically connected to the non-single crystalline emitter layer, wherein the first electrode part includes a plurality of first electrodes spaced apart from one another in a first direction and a first electrode collector in a second direction crossing the first direction; and a second electrode part positioned on the second transparent conductive oxide layer and electrically connected to the rear surface of the single crystalline semiconductor substrate, wherein the second electrode part includes a plurality of second electrodes spaced apart from one another in the first direction and a second electrode collector in the second direction crossing the first direction, wherein the first electrode part includes a first metal layer directly positioned on the first transparent conductive oxide layer and a first plated layer positioned on the first metal layer, and electrically connected to the non-single crystalline emitter layer, wherein the second electrode part includes a second metal layer directly positioned on the second transparent conductive oxide layer and a second plated layer positioned on the second metal layer, and electrically connected to the single crystalline semiconductor substrate, wherein the first electrode part and the second electrode part include at least one of Ni, Cu, Ag, Al, Sn, Zn, In, Ti and Au, wherein the first transparent conductive oxide layer and the first metal layer have different conductivities, and wherein the second transparent conductive oxide layer and the second metal layer have different conductivities.