Amorphous silicon solar cell with multiple longitudinally distributed adsorption layers

Abstract

The invention discloses an amorphous silicon solar cell with a plurality of longitudinally distributed adsorption layers, belongs to the technical field of solar energy utilization and relates to an amorphous silicon solar cell structure. Compared with an existing unijunction amorphous silicon solar cell, the amorphous silicon solar cell with a plurality of longitudinally distributed adsorption layers, which is provided by the invention, has a similar structure, however, the amorphous silicon light adsorption layers in the amorphous silicon solar cell are of a composite multilayer structure and are formed by sequentially laminating a plurality of amorphous silicon light adsorption sub layers from top to bottom along the longitudinal direction, wherein the widths of optical band gaps of the amorphous silicon light adsorption sub layers are sequentially decreased. According to the invention, the solar spectrum utilization rate of the amorphous silicon solar cell can be further improved, the solar conversion efficiency is improved, the light-induced degradation effect is also reduced and the influence of N-P reversed junctions is eliminated.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, and relates to an amorphous silicon solar cell structure, in particular to an amorphous silicon solar cell structure with multiple absorption layers. Background technique [0002] With the depletion of non-renewable resources such as oil and natural gas, solar energy, as an inexhaustible resource, has become the direction of human efforts. At present, the main silicon-based solar cells are mainly monocrystalline silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cells. Compared with monocrystalline silicon and polycrystalline silicon solar cells, amorphous silicon solar cells are greatly simplified in manufacturing process. It is greatly reduced in material consumption and electric energy consumption, thus becoming a hot spot of silicon-based solar cells. [0003] Amorphous silicon material has a high light absorption coefficient, especially in ...

AI Technical Summary

Problems solved by technology

However, this will undoubtedly increase the difficulty and complexity of the process, and at the same time cannot completely eliminate the influence of the N-P reverse junction.

Images