Abstract:In this work, we construct a double inorganic hole extraction layer (HEL) of Cs:NiO x /CuInS 2 by inserting a thin film of Cs:NiO x between the perovskite (FAPbI 3 ) 1-x (MAPbBr 3 ) x and CuInS 2 layers and fabricate n-i-p type perovskite solar cells (PSCs) using Cs:NiO x /CuInS 2 as HEL. The efficiency of the PSCs with Cs:NiO x /CuInS 2 reaches 18.04% from 16.13% for the devices with single HEL of CuInS 2 , which is close to the highest efficiency (19.24%) of the devices with double inorganic HEL reported. In… Show more
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