Abstract:A series of experimental trials has been carried out to realize the high efficiency a‐Si//Poly‐Si tandem solar cell. Employing p‐type μc‐SiC as a wide‐gap heterojunction window, a‐SiC as an interface buffer layer and n‐type μc‐Si as a back ohmic contact layer, 17.2 percent conversion efficiency has been achieved with the structure of ITO/p μc‐SiC/n Poly‐Si/n μc‐Si heterojunction.
Utilizing an optically transparent a‐Si p‐i‐n cell as a top cell and inserting an optical coupler between the top and the Poly‐Si bo… Show more
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