Hydrophobic Cu₂O Quantum Dots Enabled by Surfactant Modification as Top Hole-Transport Materials for Efficient Perovskite Solar Cells.

ABSTRACT: The utilization of an inorganic hole-transport layer (HTL) is one of the most effective methods to improve the stability and reduce the cost of perovskite solar cells (PSCs). However, achieving high-quality inorganic HTL films, especially HTL films in n-i-p structures, via solution processes remains a big challenge. Here, a simple surface modification strategy for low-cost and stable cuprous oxide (Cu₂O) quantum dots is proposed, which utilizes a silane coupling agent. The modified Cu₂O can be directly deposited on the perovskite film as the top HTL without decomposing the perovskite to maintain an n-i-p structure. The efficiency (18.9%) of PSCs with surface-modified Cu₂O as the HTL is significantly higher than that (11.9%) of PSCs with unmodified Cu_2<

SUBMITTER: Liu C 

PROVIDER: S-EPMC6446601 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature