2 results about "Cdte solar cell" patented technology

This invention belongs to the field of solar cell technology and discloses a tandem solar cell of zinc-cadmium telluride (CdTe) and perovskite. It employs a CdTe solar cell as the top cell and a narrow-bandgap perovskite solar cell as the bottom cell, improving device stability while maintaining high efficiency. By stacking two solar cells with different optical bandgapes, they exhibit different spectral responses to light absorption, fully utilizing light energy and improving photoelectric conversion efficiency. Using stable wide-bandgap CdTe as the absorber layer material of the top cell replaces the unstable wide-bandgap perovskite material, thereby improving the overall stability of the solar cell, achieving higher efficiency, and extending cell lifespan.

Method for manufacturing a CdTe solar cell, comprising the steps: a) Providing a semi-finished CdTe solar cell (10) comprising at least a transparent substrate, a front contact layer, a CdS layer and a CdTe layer, wherein a surface of the CdTe layer opposite the transparent substrate forms a first surface of the semi-finished CdTe solar cell (10), b) Applying an aqueous solution (20) comprising metal ions or metal-containing ions to a back side (11) of the semi-finished CdTe solar cell (10), c) Removing the aqueous solution (20) from the back (11) of the semi-finished CdTe solar cell (10), d) Applying a metal layer to the first surface of the semi-finished CdTe solar cell (10), and e) additionally applying electrical energy to the semi-finished CdTe solar cell (10) by electrically connecting it to an electrical power supply (140), wherein the back side (11) of the semi-finished CdTe solar cell (10) is either the first surface of the semi-finished CdTe solar cell (10) or a first surface of the metal layer facing the transparent substrate, wherein step e) is carried out for a first period (t1) of the time during which the aqueous solution (20) is present on the back side (11) of the semi-finished CdTe solar cell (10).