Solar battery and method for manufacturing the same

Abstract

The invention provides a solar cell and a manufacturing method thereof, the solar cell comprises a substrate, a nano-micron coarsening structure and a semiconductor layer, wherein the substrate is provided a first transparent conducting layer, the nano-micron coarsening structure is formed on the first transparent conducting layer, and the semiconductor layer is formed on the nano-micron coarsening structure and is coated on the nano-micron coarsening structure.

Description

technical field [0001] The invention relates to a solar cell device and a manufacturing method thereof, in particular to a solar cell in which a nano-micron roughened structure is formed between a substrate and a semiconductor layer, so as to improve the photoelectric conversion efficiency of the solar cell. Background technique [0002] At present, the mainstream of solar cells is silicon wafer solar cells, accounting for about 90% of the total output. However, in recent years, the shortage of silicon raw materials has drawn attention to thin-film solar cells that do not require the use of silicon raw materials or can reduce the amount of silicon used. The current development of solar cells is still dominated by silicon-based solar cells. In order to pursue the effective absorption and utilization of the solar spectrum, stacked solar cells (Tandem cells) are currently the development axis of silicon thin film solar cells. [0003] figure 1 It is a schematic diagram of a k...

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Problems solved by technology

However, thinning the film thickness below the minimum absorption thickness will result in insufficient sunlight absorption and negatively impact efficiency

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