Graphene solar cell and preparing method thereof

Abstract

The invention discloses a graphene solar cell and a preparing method thereof. The graphene solar cell comprises an antireflection film, a multilayer graphene front surface electrode, a single-layer graphene grid line, an epitaxial piece and a multi-layer graphene back surface electrode; the antireflection film, the single-layer graphene grid line, the epitaxial piece and the multi-layer graphene back surface electrode are sequentially laminated from top to bottom; the multi-layer graphene front surface electrode is correspondingly arranged on the epitaxial piece and is positioned at the same side of the epitaxial piece together with the single-layer graphene grid line; the multi-layer graphene front surface electrode surrounds the area formed by the single-layer graphene grid line and is connected with the single-layer graphene grid line; the multi-layer graphene front surface electrode is provided with metal contact points, and a metal lead is led from each metal contact point. The single-layer graphene is used as the grid line of the solar cell, so the width and thickness of the grid line are greatly reduced, the optical absorption of the grid line is effectively reduced due to the high transmission of light of a graphene material, and the cell conversion efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a graphene 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. 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 epitaxial growth ...

AI Technical Summary

Problems solved by technology

In practical applications, the chemical stability of ITO is poor, and the light absorption of ITO thin films that meet the electrical performance requirements is only about 85%.

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