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Perovskite solar cells soar to new heights -- ScienceDaily
Science News from research organizations 1 . 2 . Perovskite solar cells soar to new heights . Date: December 2, 2021 Source: Technische Universit?t Dresden Summary: Researchers have developed a novel method to fabricate lead halide perovskite solar cells with record efficiency. Share: FULL STORY Metal halide perovskites have been under intense investigation over the last decade, due to the remarkable rise in their performance in optoelectronic devices such as solar cells or light-emitting diodes. The most efficient devices, fabricated in the so called 'standard architecture' commonly include processing steps performed at high temperature, thus increasing their energy payback time and limiting the possibility to integrate them in emerging applications such as flexible and wearable electronics. An alternative device architecture -- termed the 'inverted architecture' -- eliminates the need for high temperature processing, but generally leads to a lower photovoltaic efficiency. advertisement In a joint collaborative effort between the University of Pavia (Italy) and the Technische Universit?t Dresden (Germany), researchers have developed a novel method to significantly improve the efficiency of inverted architecture solar cells. The method is based on a modification of the interfaces of the perovskite active layer by introducing small amounts of organic halide salts at both the bottom and the top of the perovskite layer. Such organic halide salts, typically used for the formation of two-dimensional perovskites, led to the suppression of microstructural flaws and passivation of the defects of the perovskite layer. Using this approach, the team has achieved a power conversion efficiency of 23.7% -- the highest reported to date for an inverted architecture perovskite solar cell. "Importantly, the improvement in performance is accompanied by an increase in device stability" says Prof. Giulia Grancini, an Associate Professor of Chemistry at the University of Pavia. Considering that stability remains one of the key hurdles for the commercialization of perovskite solar cells, the simultaneous improvement of efficiency and stability is particularly promising. "The fact that our devices are fabricated at low temperatures of less than 100° C and that our approach is fully applicable to the fabrication of large area devices takes us one step closer to large-scale utilization of perovskite solar cells" adds Prof. Yana Vaynzof, Chair for Emerging Electronic Technologies at the Institute for Applied Physics and Photonic Materials and the Center for Advancing Electronics Dresden (cfaed). The record efficiency achieved by the researchers brings perovskite solar cells to new frontiers. Considering the enhanced stability and the scalability of the novel approach, it's only a matter of time until perovskite solar cells can be found on every rooftop. make a difference: sponsored opportunity Story Source: Materials provided by Technische Universit?t Dresden . Note: Content may be edited for style and length. Journal Reference : Matteo Degani, Qingzhi An, Miguel Albaladejo-Siguan, Yvonne J. Hofstetter, Changsoon Cho, Fabian Paulus, Giulia Grancini, Yana Vaynzof. 23.7% Efficient inverted perovskite solar cells by dual interfacial modification . Science Advances , 2021; 7 (49) DOI: 10.1126/sciadv.abj7930 . Cite This Page : MLA . APA . Chicago . Technische Universit?t Dresden. "Perovskite solar cells soar to new heights." ScienceDaily. ScienceDaily, 2 December 2021. . Technische Universit?t Dresden. (2021, December 2). Perovskite solar cells soar to new heights. ScienceDaily . Retrieved December 3, 2021 from www.sciencedaily.com/releases/2021/12/211202141520.htm Technische Universit?t Dresden. "Perovskite solar cells soar to new heights." ScienceDaily. www.sciencedaily.com/releases/2021/12/211202141520.htm (accessed December 3, 2021). RELATED TOPICS Matter & Energy Solar Energy . Electronics . Graphene . Technology . Earth & Climate Energy and the Environment . Renewable Energy . Geomagnetic Storms . Atmosphere . advertisement RELATED TERMS Solar cell . Lead . Solar power . Alternative fuel vehicle . Solar panel . Absolute zero . Lead poisoning . Haloalkane . 1 . 2 . 3 . 4 . 5 . RELATED STORIES Highly Efficient Perovskite Solar Cells With Enhanced Stability and Minimized Lead Leakage . Sep. 21, 2020 ? While the power conversion efficiency of perovskite solar cells (PVSCs) has already greatly improved in the past decade, the problems of instability and potential environmental impact are yet to be ... On the Road to Non-Toxic and Stable Perovskite Solar Cells . May 11, 2020 ? The promising halide perovskite materials for solar energy conversion show high efficiencies, but this comes at a cost: The best perovskite materials incorporate toxic lead which poses a hazard to ... New Technique Lets Researchers Map Strain in Next-Gen Solar Cells . Oct. 31, 2019 ? Researchers have developed a way to map strain in lead halide perovskite solar cells without harming them. Their approach can image the grain structure of a perovskite solar cell, showing that ... Perovskite Solar Cells Leap Toward Commercialization . Sep. 28, 2018 ? Scientists have developed a new method to fabricate low-cost high-efficiency solar cells. The cells were developed using the materials and compounds that mimic the crystalline structure of the ... FROM AROUND THE WEB ScienceDaily shares links with sites in the TrendMD network and earns revenue from third-party advertisers, where indicated. .
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