A multijunction solar cell is a type of photovoltaic cell that is made up of multiple layers of different semiconductor materials. This allows the cell to absorb a wider range of wavelengths of light, resulting in a higher efficiency of converting sunlight into electricity.
A traditional solar cell is made of a single layer of semiconductor material, usually silicon. In contrast, a multijunction solar cell has multiple layers of different materials, allowing it to capture a broader spectrum of light and therefore produce more energy.
Multijunction solar cells are commonly used in space technology, such as in satellites and spacecraft, due to their high efficiency and ability to operate in low light conditions. They are also being researched and developed for use in terrestrial applications, such as solar panels for buildings and solar-powered vehicles.
One recent advancement is the use of new materials, such as perovskites, as the top layer in multijunction cells. These materials have shown promising results in increasing the efficiency and stability of the cells. Another advancement is the development of flexible, lightweight multijunction cells that can be integrated into a variety of surfaces.
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