Researchers on the Metropolis College of Hong Kong and the Nationwide Renewable Vitality Laboratory have developed a one-step coating technique that simplifies Perovskite photo voltaic cell manufacturing.
Perovskite photo voltaic cells (PSCs) are a promising possibility for next-gen photovoltaics with excessive effectivity and low price. The present layer-by-layer manufacturing strategy has produced high-performance outcomes. Nonetheless, its points, akin to excessive fabrication prices, unevenness, and low reproducibility, might hinder commercialization.
Researchers on the Metropolis College of Hong Kong (CityU) and the Nationwide Renewable Vitality Laboratory (NREL) in the USA have collectively developed a groundbreaking one-step coating technique, streamlining PSC manufacturing and lowering commercialization hurdles. Decreasing processing steps, however sustaining system effectivity, can simplify manufacturing, decrease prices, and enhance PSCs’ manufacturability. The revolutionary co-processing method combines the hole-selective contact and perovskite layer in a single step, reaching 24.5% effectivity and noteworthy stability in inverted perovskite photo voltaic cells. This development brings commercialization one step nearer.
Researchers have created a brand new technique for producing environment friendly inverted perovskite photo voltaic cells by permitting the hole-selective contact and perovskite absorber to kind collectively in a single coating resolution. Including sure acids to perovskite precursor options permits self-assembly on the indium tin oxide substrate throughout perovskite movie processing. The ensuing monolayer is a robust, self-assembled hole-selective contact whereas the perovskite crystallizes. In contrast to the normal layer-by-layer course of, this system solves wettability points and simplifies system fabrication by creating contact and absorber in a single step.
The newly developed PSC system has a 24.5% energy conversion effectivity and maintains over 90% of its preliminary effectivity after 1,200 hours of steady illumination at most energy. Its effectivity is similar to comparable market PSCs. The group demonstrated that the brand new strategy works with varied self-assembled monolayer molecular techniques, perovskite compositions, solvents, and scalable processing strategies, akin to spin-coating and blade-coating methods whereas reaching comparable PSC efficiency to different strategies.
Introducing this revolutionary technique hopes to simplify manufacturing high-performance perovskite photo voltaic cells and expedite bringing them to market. The group plans to check the connection between self-assembled monolayer molecule buildings and perovskite precursors for optimum self-assembled monolayer molecules and PSC efficiency enchancment.
Reference : Xiaopeng Zheng et al, Co-deposition of hole-selective contact and absorber for enhancing the processability of perovskite photo voltaic cells, Nature Vitality (2023). DOI: 10.1038/s41560-023-01227-6