NIP heterojunction solar cell and manufacturing method thereof

Abstract

The invention provides an NIP heterojunction solar cell and a manufacturing method thereof. The NIP heterojunction solar cell sequentially comprises a transparent front electrode, an electron transport layer, an N-type perovskite layer, an I-type copper indium gallium selenium layer, a P-type copper indium gallium selenium layer, a molybdenum electrode layer and a cell substrate from top to bottom. The manufacturing method comprises the following steps: preparing the molybdenum electrode layer on the cell substrate by adopting a direct current magnetron sputtering method; sequentially depositing the P-type CIGS layer and the I-type CIGS layer on the molybdenum electrode layer by adopting a three-step co-evaporation method; spin-coating a mixed solvent on the CIGS layer, and then obtaining a perovskite layer by heating; preparing a zinc oxide layer in the thickness of 70 nanometers on the N-type perovskite layer by adopting a direct-current magnetron sputtering method; and preparing an AZO layer in the thickness of 500 nanometers on the electron transport layer by adopting a direct-current magnetron sputtering method. According to the invention, the electron collection efficiency can be improved, and the photoelectric conversion efficiency of the solar cell is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a NIP heterojunction solar cell and a manufacturing method thereof. Background technique [0002] Solar cells are components that directly convert light energy into electrical energy. Since the range of solar radiation spectrum (0-4eV) is very wide, according to the principle of photovoltaic effect, a single-junction solar cell composed of a single semiconductor material can only convert solar radiation spectrum Part of the light energy is converted into electrical energy, the effective utilization rate of solar energy is low, and the output voltage is low. [0003] In the prior art, stacked cells are used to realize the response of the solar cell to the response wavelength. In recent years, perovskite solar cells using a stacked structure have attracted widespread attention in the photovoltaic industry. The photoelectric conversion efficiency of perovskite solar cells has ...

AI Technical Summary

Problems solved by technology

[0004] However, on the one hand, the disadvantage of laminated batteries is that the cost is higher

On the other hand, copper indium gallium selenide semiconductor materials have more recombination of electrons, which limits the collection efficiency and short-circuit current density of photogenerated electrons, resulting in low photoelectric conversion efficiency.

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