The wafers carrying 500 tiny solar cells produced by Soitec produced a new world record.
Soitec , a French manufacturing company, stated that it has applied technology that enables microprocessors to produce solar cells with 46% set record efficiency, and its light conversion efficiency is double that of traditional battery technology.
Although the production technology of such batteries is more complicated, it is expected to reduce production costs through existing manufacturing technologies.
Ordinary solar cells use a semiconductor to convert sunlight into electricity. The battery studied by Soitec company has 4 semiconductors, each designed for different parts of the solar spectrum. Soitec produced the first quad-cell battery about a year ago. Since then, its efficiency has increased rapidly, and it appears to be expected to be the first milestone with 50 % efficiency.
In the past few years, the cost of solar power has dropped by more than 80 %, mainly because the company has found a cheaper way to manufacture traditional silicon solar cells. However, solar power is still more expensive than fossil fuels in most places.
Soitec plans to start mass production of four-cell batteries in 2016 . Some problems that still exist today are still how to make the production process more cheap.
Beyond Soitec , other companies are also striving for the first to achieve 50 % efficiency. This year, Semprius also demonstrated a four-cell battery with 44.1 percent light conversion efficiency. The company said it is expected to break the world record next year.
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