A curved bottom electrode thin film solar cell

Abstract

The invention provides a cambered bottom electrode thin film solar cell comprising metal top electrodes, a transparent conductive thin film, a P type amorphous silicon thin film, an intrinsic amorphous silicon thin film, an N type amorphous silicon thin film, a metal bottom electrode and a substrate, which are connected in sequence from top to bottom, wherein a plurality of conductive metal flanges are arranged on the upper surface of the metal bottom electrode, the N type amorphous silicon thin film, the intrinsic amorphous silicon thin film, the P type amorphous silicon thin film and the transparent conductive thin film above the flanges are provided with upward protruding strip-shaped bulges, the metal top electrodes are arranged at the two sides of the strip-shaped bulge of the transparent conductive thin film. According to the cell provided by the invention, the bottom electrode is provided with cambered or approximate cambered flanges, and the flanges stretch into the thin films to improve the current collection ability of the electrode; the successively deposited thin film material on the bottom electrode forms cambered bulges at positions corresponding to the flanges to increase the area of the thin film cell and increase the illuminated face of the cell; and the bulges of the thin film form a convex lens to collect the incident light so as to improve the light absorption and utilization of the cell, thereby further improving the conversion efficiency of the cell.

Description

technical field [0001] The invention relates to an arc-shaped bottom electrode thin-film solar cell, which belongs to the technical field of solar cells. Background technique [0002] Photons, electrons, and phonons are all carriers of energy. As a photoelectric energy conversion device, solar cells mainly exchange energy between photons and electrons, and at the same time, phonons participate in this exchange process. This energy interaction mainly occurs within a few microns on the surface of solar cell materials, which provides a physical basis for manufacturing thin-film solar cells. [0003] Amorphous silicon thin-film solar cells have become one of the most attractive silicon-based solar cells to reduce the cost of solar cells because of their advantages of significantly reducing the amount of silicon used and the low temperature of the manufacturing process. However, compared with other silicon-based solar cells, the conversion efficiency of amorphous silicon thin-f...

AI Technical Summary

Problems solved by technology

The thin film electrode prepared in this way has a simple preparation method and stable performance, but the electrode in this way has limited improvement in battery performance.

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