US 11,864,399 B1
Composite materials for transport layers in perovskite solar cells
Tomas Leijtens, Redwood City, CA (US); Giles Eperon, Arvada, CO (US); Rohit Prasanna, San Francisco, CA (US); and Annikki Santala, Woodside, CA (US)
Assigned to Swift Solar Inc., San Carlos, CA (US)
Filed by Swift Solar Inc., San Carlos, CA (US)
Filed on Aug. 22, 2022, as Appl. No. 17/821,246.
Int. Cl. H10K 30/10 (2023.01); H10K 85/20 (2023.01); H10K 102/00 (2023.01)
CPC H10K 30/10 (2023.02) [H10K 85/211 (2023.02); H10K 2102/00 (2023.02)] 17 Claims
OG exemplary drawing
 
1. A solar cell comprising:
a bottom electrode;
a bottom transport layer over the bottom electrode;
a perovskite absorber layer over the bottom transport layer;
a top transport layer over the perovskite absorber layer, wherein the top transport layer includes a metal halide and fullerene blend, and the metal halide comprises 20%-67% by volume of the top transport layer;
a buffer layer over the top transport layer; and
a top electrode layer over the buffer layer.