SOLAR CELL AND METHOD FOR MANUFACTURING THE SAME

摘要

A solar cell is discussed, and includes a substrate; a first field region; a first electrode directly formed on an emitter region; and a second electrode directly formed on a second field region, wherein a second passivation layer comprises a first back passivation portion and a second back passivation portion. Furthermore, the first back passivation portion is merely positioned between the emitter region and the substrate and the second field region and the substrate, and the second back passivation portion is positioned between the emitter region and the second field region, and wherein the first back passivation portion positioned between the emitter region and the substrate is physically separated from first back passivation portion positioned between the second field region and the substrate.

主权项

1. A solar cell, comprising:
a substrate including first impurities of a first conductive type; a first passivation layer that is positioned on an incident surface of the substrate; a first field region positioned on an incident surface of the substrate, and contains second impurities of a first conductive type; an anti-reflection layer positioned on the first field region; an emitter region that contains third impurities of a second conductive type opposite the first conductive type, and is positioned on a non-incident surface of the substrate opposite the incident surface of the substrate; a second passivation layer positioned on the non-incident surface of the substrate; a second field region that is positioned at the non-incident surface of the substrate, wherein the second field region has the same conductive type as the first field region; a spacing between the emitter region and the second field region to physically separate the emitter region and the second field region; a first electrode directly formed on the emitter region; and a second electrode directly formed on the second field region, wherein the second passivation layer comprises a first back passivation portion and a second back passivation portion, the first back passivation portion is merely positioned between the emitter region and the substrate and the second field region and the substrate, and the second back passivation portion is positioned between the emitter region and the second field region, and wherein the first back passivation portion positioned between the emitter region and the substrate is physically separated from first back passivation portion positioned between the second field region and the substrate.