The manufacturing process of multijunction solar cells typically involves several steps, including:

Growth of the semiconductor material: The semiconductor material is grown in a controlled environment using methods such as molecular beam epitaxy (MBE) or metal-organic chemical vapor deposition (MOCVD).

Deposition of the metal contacts: Metal contacts are deposited on the surface of the semiconductor material to allow for electrical connection to the rest of the circuit.

Formation of the p-n junctions: The p-n junctions are formed by doping the semiconductor material with impurities to create an electric field. This is done using a variety of techniques, such as ion implantation or diffusion.

Assembly of the solar cell: The solar cell is assembled by connecting the metal contacts to the p-n junctions and encapsulating the cell in a protective material to prevent damage from environmental factors.

Testing and quality control: The completed solar cell is tested to ensure it meets specifications and quality standards, including efficiency and stability.

Each step of the process must be carefully controlled and optimized to produce high-quality, efficient multijunction solar cells. The exact process may vary depending on the specific materials and technology used, but the overall goal is to create a solar cell with multiple layers of semiconductor material that can capture and convert a wide range of solar radiation into electrical energy.

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