a new generation of photovoltaic technology breaks through
2024-10-01
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in response to the problem of poor operating stability of perovskite solar cells under high-temperature operating conditions, professor yuan mingjian of the school of chemistry of nankai university led a research team to conduct high-level international collaborative research and successfully prepared a solar cell with both high energy conversion efficiency and high operating stability. perovskite solar cell devices mark a major breakthrough in the new generation of photovoltaic technology.
on the evening of september 30, "nature" magazine published the research results under the title "perovskite solar cells with csium formamidine components with high efficiency and thermal stability."
crystallization path transformation strategy achieves high-efficiency and stable perovskite solar cells under high-temperature conditions. (photo provided by interviewee)perovskite is a type of material with a unique crystal structure that is widely used in new solar cells and other semiconductor devices. as a third-generation photovoltaic technology, perovskite solar cells have unique flexible compatibility and large-area preparation potential, bringing unprecedented opportunities to photovoltaics, the internet of things, new energy vehicles and even aerospace and other fields. but the stability of this new type of solar cell has been a key factor limiting its large-scale commercial application. perovskite materials serve as the light-absorbing layer of batteries, and their stability is significantly affected by external environmental factors. currently, high-performance perovskite solar cells often rely on volatile organic amine salt additives to stabilize the phase and control crystallization during the preparation process. however, this additive is easily decomposed under high temperature conditions, causing an imbalance in the chemical composition of the perovskite film, which significantly reduces the operating stability of the battery under high temperature conditions.
in response to this problem, yuan mingjian led the research team to develop a preparation strategy for alloy perovskites with higher thermal stability based on theoretical predictions. this strategy completely solved the problem of uneven composition of perovskite films containing cesium formamidine. . perovskite solar cell devices prepared using this strategy demonstrate world-class energy conversion efficiency and high-temperature operating stability.
the research team collaborates to explore key issues in materials. (provided by interviewee)"this research not only lays a solid technical foundation for improving the stability of perovskite solar cells, but also opens up broad prospects for the further practicalization and commercialization of photovoltaic technology, and is of far-reaching significance for promoting the green transformation of the global energy structure. "yuan mingjian said.
yuan mingjian said that the research team is currently actively promoting the research and development of high-performance perovskite solar cell modules that meet the needs of industrialization through school-enterprise cooperation, and strives to promote the practical application and industrialization of research results as soon as possible. (reporters zhang jianxin, li yating)
