New design of solar cells presented by scientists of the University of Kobe (Japan) is able to increase feed conversion efficiency by more than 50%, absorbing more long-wave than usual.
In order to reduce energy losses and increase the efficiency of conversion, the team of Professor Takashi kita used the two photons of energy transferred through the solar cell and containing the hetero-interface formed from semiconductors with different absorption. With these photons, they have developed a new structure of solar cell.
During the theoretical test solar cells new designs have reached conversion efficiencies of 63% and conversion with increasing frequency on the basis of these two photons. The reduction of energy losses by more than 100 times, demonstrated on the basis of this experiment, was more effective than other methods, which use medium frequency bands.
Scientists are going to continue to improve the design of solar cells and improve their efficiency to reduce the cost of electricity generation.
Theoretically, the upper limit of the efficiency of conventional solar cells is 30%, and most of the solar energy falling on the element is lost or wasted becomes heat energy. Experiments that are conducted around the world, trying to get around this limitation. krichashvili conversion rate of a cell exceeds 50%, this will have a significant impact on the cost of production of ele.
Recently about the new record efficiency silicon solar cells multicontact reported by scientists in Germany and Austria, achieving a performance of 31.3%. They used the technology of splicing plates, which is often used in the field of microelectronics. By the way, the previous record belongs to them in November last year, the efficiency of solar cells was 30.2%. published
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