For industrial endeavors, perovskite solar cells (PSCs) demand long-term stability and a cost-effective hole-transporting layer (HTL). The PSC stability can be substantially improved by the rational design of dopant-free HTL...
This work describes a simple and cost-effective aqueous-phase synthesis of Cu nanowires with long-term stability. Chloride ions and branched polyethyleneimine (BPEI) were found to be of great importance to the formation and stabilization of Cu nanowires.
Perovskite solar cells with superior tolerance to humidity (85–95% RH) and long-term stability have been achieved via adding a certain amount of a cost-effective and available water soluble additive, polyvinyl alcohol (PVA).