Prototype equipment developed by the MIT team, sunlight from the middle window into the vacuum chamber.
A black carbon nanotube layer used to capture sunlight and convert it into heat.
Recently, the 2017 MIT Technology Review was released on the list of the world's top ten breakthrough technologies. As one of the world's most famous technology lists, MIT Technology Review has the world's top ten breakthrough technologies with great global influence and authority. This year's list refers to an energy technology: solar thermal photovoltaic cells, a technology that doubles the efficiency of solar cells.
This new design may spawn cheap solar power technology that will still work after sunset. The technology was researched by David Bierman of MIT, Marin Soljacic, Evelyn Wang, and Purdue University Vladimir Shalaev. The technology is expected to mature and realize its application during the period from 2027 to 2032.
The secret to doubling the efficiency of solar cells is to first turn sunlight into heat and then turn it back into light that is concentrated in the spectral range that solar cells can use. Moreover, this device from the Massachusetts Institute of Technology is the first device that can absorb more energy than just using photovoltaic cells.
The key step in the successful implementation of this technology is the development of a tool called an absorber-radiator, which is essentially a light funnel placed above the solar cell. The absorbing layer consists of solid black carbon nanotubes that capture all the energy in the sun and convert most of it into heat.
The technology of the MIT team also has its drawbacks, for example, some parts are still relatively expensive, and currently only work in a vacuum environment. However, its economy should increase as efficiency increases.
If researchers can integrate heat storage equipment and increase efficiency levels, the system will one day be able to achieve clean, cheap and continuous solar power supply .
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