| 主权项 |
1. A solar cell, comprising:
a substrate of a first conductive type; a plurality of emitter layers having a second conductive type opposite the first conductive type, the plurality of emitter layers positioned in a first surface of the substrate and extended in a first direction in the first surface of the substrate; a plurality of surface field layers having the first conductive type more heavily doped than the substrate, the plurality of surface field layers positioned in the first surface of the substrate and extended in the first direction in the first surface of the substrate; a passivation layer positioned on the first surface of the substrate and including a plurality of first openings exposing portions of each of the plurality of surface field layers and a plurality of second openings exposing portions of each of the plurality of emitter layers; a plurality of first electrodes positioned in the plurality of first openings and contacting the plurality of surface field layers; a plurality of second electrodes positioned in the plurality of second openings and contacting the plurality of emitter layers; a plurality of first conductive members positioned on the plurality of first electrodes; and a plurality of second conductive members positioned on the plurality of second electrodes; wherein the plurality of first electrodes are arranged to be spaced apart from one another in the first direction on at least one of the plurality of surface field layers, the plurality of second electrodes are arranged to be spaced apart from one another in the first direction at least one of the plurality of emitter layers, the plurality of first conductive members are arranged to be spaced apart from one another in the first direction on at least one of the plurality of surface field layers and on at least one of the plurality of first electrodes, and the plurality of second conductive members are arranged to be spaced apart from one another in the first direction on at least one of the plurality of emitter layers and on at least one of the plurality of second electrodes, and wherein each of the plurality of first electrodes and each of the plurality of second electrodes contain at least one selected from the group consisting of silver (Ag), nickel (Ni), copper (Cu), aluminum (Al), tin (Sn), zinc (Zn), indium (In), titanium (Ti), gold (Au), and a combination thereof, each of the plurality of first conductive members and each of the plurality of second conductive members are formed of Sn based material, a thickness of each first electrode and a thickness of each second electrode are less than a thickness of the passivation layer. |
