Hetero-junction silicon solar cell and fabrication method thereof

Abstract

Disclosed are a hetero-junction silicon solar cell and a fabrication method thereof. The hetero-junction silicon solar cell according to the present invention forms a pn junction of a crystalline silicon substrate and a passivation layer doped with impurities so as to minimize a recombination of electrons and holes, making it possible to maximize efficiency of the hetero-junction silicon solar cell. The present invention provides a hetero-junction silicon solar cell comprising a crystalline silicon substrate and a passivation layer that is formed on the crystalline silicon substrate and is doped with impurities.

Description

technical field [0001] The invention relates to a heterojunction silicon solar cell and a manufacturing method thereof. More specifically, the present invention relates to a heterojunction silicon solar cell and a manufacturing method thereof that form a pn junction of a crystalline silicon substrate and a passivation layer doped with impurities so as to minimize recombination of electrons and holes, Maximizing the efficiency of heterojunction silicon solar cells. Background technique [0002] In recent years, new forms of renewable energy have received much attention due to issues such as rising oil prices, global warming, depletion of fossil energy sources, nuclear waste disposal, site selection involved in construction of new power plants, and the like. Among them, research and development of solar cells as non-polluting energy sources have been actively promoted. [0003] Solar cells, which are devices that convert light energy into electrical energy using the photoele...

AI Technical Summary

Problems solved by technology

[0009] However, in heterojunction silicon solar cells, compared to the reference figure 1 Described amorphous / crystalline pn heterojunction silicon solar cells in which a p-type amorphous silicon layer is deposited on an n-type crystalline silicon substrate compared to a solar cell in which an n-type amorphous silicon layer is deposited on a p-type crystalline silicon substrate The structure of amorphous / crystalline np heterojunction silicon solar cells has the problem of low efficiency

In addition, since the fabrication of amorphous / crystalline heterojunction solar silicon cells requires many vacuum deposition devices compared with the fabrication of conventional diffused crystalline silicon solar cells, there are problems of long manufacturing time and high manufacturing costs

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