The laminated perovskites solar cells are produced via hot pressing of two independently fabricated half-stacks (see Figure 1).
However, the established sequential layer deposition methods severely limit the choice of materials and accessible device architectures. In response, a novel lamination process that increases the degree of freedom in processing the top perovskite solar cell (PSC) is proposed.
In response, a novel lamination process that increases the degree of freedom in processing the top perovskite solar cell (PSC) is proposed. The very first prototypes of laminated monolithic perovskite/silicon tandem solar cells with stable power output efficiencies of up to 20.0% are presented.
As a consequence of this lamination step, the perovskite thin film recrystallizes and unites both half-stacks into a monolithic perovskite/silicon tandem solar cell. a) Illustration of the lamination process and device architecture of the laminated monolithic perovskite/silicon tandem solar cells.
Compared to previous literature, 43 the PCE of the presented laminated perovskite solar cells represent a significant advance. The novel lamination strategy, using a thin PTAA buffer layer together with the NiO x HTL, improves the PCE from 10.6% 43 to 14.6%.
By laminating the two half-stacks processed on the PEN substrates, the flexible opaque perovskite solar cell demonstrates a PCE of 11.3% (SPCE of 11.2%). By replacing the gold with an ITO electrode, the laminated semitransparent device achieves a PCE of 8.8%.