AI Article Synopsis
- The commercialization of thin-film solar cells using organic lead perovskites is hindered by interface loss in current devices.
- A new interface architecture combines efficient hole-transporting materials that are both reliable and cost-effective, improving performance without sacrificing stability.
- Ta-WO-doped multilayers have been shown to create better electrical contacts, achieving up to 21.2% efficiency and over 1000 hours of light stability in specific perovskite solar cell designs.
Article Abstract
A major bottleneck delaying the further commercialization of thin-film solar cells based on hybrid organohalide lead perovskites is interface loss in state-of-the-art devices. We present a generic interface architecture that combines solution-processed, reliable, and cost-efficient hole-transporting materials without compromising efficiency, stability, or scalability of perovskite solar cells. Tantalum-doped tungsten oxide (Ta-WO )/conjugated polymer multilayers offer a surprisingly small interface barrier and form quasi-ohmic contacts universally with various scalable conjugated polymers. In a simple device with regular planar architecture and a self-assembled monolayer, Ta-WO -doped interface-based perovskite solar cells achieve maximum efficiencies of 21.2% and offer more than 1000 hours of light stability. By eliminating additional ionic dopants, these findings open up the entire class of organics as scalable hole-transporting materials for perovskite solar cells.
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| http://dx.doi.org/10.1126/science.aao5561 | DOI Listing |
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