Blade-Coated Perovskites on Textured Silicon for 26%-Efficient Monolithic Perovskite/Silicon Tandem Solar Cells

As an outstanding tandem partner for silicon solar cells, solution-processed metal halide perovskites offer highly efficient photovoltaics at low cost. To date, the reported monolithic perovskite/silicon tandem cells are fabricated primarily on silicon cells with a front-side-polished surface, which is not compatible with the industrial-standard double-side-textured silicon cells. Thermal evaporation of perovskite film has been reported for perovskite/silicon tandem cells on textured silicon to bridge the gap, but it sacrifices the advantage of solution-processed perovskites. Here, we develop a new tandem architecture that enables scalable, solution-based blading of perovskites onto textured silicon wafers. This new tandem architecture combines the advances of textured silicon photovoltaics and solution-processed perovskite photovoltaics to increase the efficiency while reducing the cost of monolithic perovskite/silicon tandem cells.

University of North Carolina, Arizona State University (ASU)

Bo Chen and Zhengshan J. Yu and Salman Manzoor and Shen Wang and William Weigand and Zhenhua Yu and Guang Yang and Zhenyi Ni and Xuezeng Dai and Zachary C. Holman and Jinsong Huang

Joule

PDMS,blade coating,light scattering layer,monolithic,perovskite solar cells,planarized,tandem solar cells,textured silicon

2020

4

10.1016/j.joule.2020.01.008

25424351

4

850-864

Cell Press

4