The Pluto Pluto battery developed by Wuxi Suntech has the latest conversion efficiency of 20.3%.
The battery of the SE structure has many advantages, such as lowering the series resistance and increasing the fill factor. In the screen printing process, the front gate contact resistance, the bulk resistance and the diffusion layer sheet resistance contribute the most to the series resistance. It can also reduce the carrier Auger recombination and improve the surface passivation effect. It can effectively reduce the Auger of carriers when flowing in the lateral direction of the diffusion layer and improve the carrier collection efficiency. Furthermore, it improves the short-wave spectral response of the light and increases the short-circuit current and open-circuit voltage.
Although the SE solar cell has not yet entered the mass production stage, the high conversion efficiency of the selective emitter battery can not be underestimated to reduce the production cost. After the technology and technology matching is more perfect, it is expected to become a hot product in the photovoltaic market in the next few years.
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