ITO (indium tin oxide) grid line solar cell and preparation method thereof

Abstract

The invention discloses an ITO (indium tin oxide) grid line solar cell and a preparation method thereof. The ITO grid line solar cell comprises an antireflection film, crossed ITO grid lines, an epitaxial wafer, a back metal electrode and front metal electrodes. The antireflection film, the crossed ITO grid lines, the epitaxial wafer and the back metal electrode are stacked in sequence from top to bottom; the front metal electrodes are correspondingly arranged on the epitaxial wafer, and the front metal electrodes and the crossed ITO grid lines are located on the same side face of the epitaxial wafer; the front metal electrodes are arranged around an area formed by the crossed ITO grid lines, and connected with the area. According to the ITO grid line solar cell and the preparation method thereof disclosed by the invention, by adopting ITO as the grid lines of the solar cell, the reflection and the absorption of conventional metal grid lines to light can be well avoided, so that the area below the crossed ITO grid lines also can take part in light absorption, and photovoltaic conversion is performed, and therefore the efficiency of the solar cell is greatly improved. Meanwhile, the ITO is used as the grid lines instead of precious metals, such as gold, silver and the like, so that the cost can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to an ITO grid wire solar cell and a preparation method thereof. Background technique [0002] With the development of modern industry, the global energy crisis and air pollution problems have become increasingly prominent. As an ideal renewable energy source, more and more countries have paid attention to solar energy. Carrying out solar cell research and developing the photovoltaic power generation industry will contribute to the sustainable development of national energy. is of great significance. At present, the main problems faced by solar cells are low photoelectric conversion efficiency and low cost performance, which cannot meet the needs of large-scale civilian use. At present, the conversion efficiency of commercial monocrystalline silicon cells is about 16%-20%, and that of polycrystalline silicon cells is about 14%-16%. GaInP / GaAs / Ge triple-junction solar cells with...

AI Technical Summary

Problems solved by technology

However, the opaque metal grid will reflect and absorb the incident light, thereby reducing the effective light-receiving area of ​​the solar cell, thereby reducing the output power of the single cell

Images