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according to xinhua news agency, in response to the problem of poor operating stability of perovskite solar cells under high-temperature operating conditions, professor yuan mingjian from the school of chemistry at nankai university led a research team to conduct high-level international collaborative research and successfully prepared a device with both high energy conversion efficiency and perovskite solar cell devices with high operational stability 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.

"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 has far-reaching significance in 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.

it is reported that solar cells are mainly divided into two categories: crystalline silicon cells and thin film cells. these two types of cells were relatively independent in technology at first, and have continued to develop and iterate in their respective directions.

among crystalline silicon cells, n-type and p-type monocrystalline silicon cells are the mainstream in the industry. among thin film batteries, there are several common compound batteries such as gallium arsenide, cadmium telluride, copper indium gallium selenide, and perovskite. relatively speaking, the elements required for perovskite are abundant in the earth's crust, which provides the necessary conditions for its large-scale development.

perovskite solar cells, as the third generation of new solar cells, have the advantages of high conversion efficiency, low cost, and wide application scenarios.the upstream of the industrial chain includes tco glass, target materials, poe film, butyl glue and other auxiliary materials, as well as coating equipment, coating equipment, laser equipment, packaging equipment and other equipment, among which coating equipment (pvd, rpd), coating machines, laser equipment is the core; the midstream is the manufacturing of perovskite cells and components; the downstream is the application of perovskite cells, including bipv (building integrated photovoltaic), vehicle-mounted photovoltaics, indoor photovoltaics, etc.

soochow securities stated in a research report that according to the mass production plans released by various manufacturers, the total perovskite module production capacity will be 1.25gw in 2023 and 7.4gw in 2025. the module market space is expected to be approximately 3.75 billion yuan; perovskite modules in 2030 the production capacity is expected to be 142gw, corresponding to a market space of approximately 95 billion yuan, with a compound growth rate of 128% from 2022 to 2030.

among a-share listed companies, many companies have made breakthroughs in perovskite battery technology.

tongwei co., ltd. has established a perovskite stacked battery laboratory and established tongwei global innovation r&d center to conduct parallel research and development on a variety of technical routes including perovskite/silicon stacked advanced batteries. currently, small-size perovskite the efficiency of the mine/hjt stacked cell reaches 33.08%.

china nuclear power currently has core technologies and a full set of independent intellectual property rights for rigid and flexible perovskite solar cells. the 1200×400mm² commercial-grade flexible perovskite module successfully developed in 2024 has an efficiency of up to 17.75%, setting a record for the largest size and highest efficiency in the flexible perovskite module industry.

tuori new energy currently has a dedicated perovskite project team that mainly studies trans-structured perovskite batteries. at this stage, it is conducting experiments on new materials, new formulas, and new structures in small-area batteries, as well as mass-production experiments on actual production lines.

manster has formed stable market expansion and product delivery capabilities in the perovskite solar sector. the scale of orders for experimental lines and pilot lines continues to increase, and some orders will gradually complete revenue recognition after customer acceptance this year.

longi green energy’s perovskite battery technology is currently in the laboratory research and development stage. in november 2023, the crystalline silicon-perovskite stacked battery developed by the company was certified by the u.s. national renewable energy laboratory (nrel), with an efficiency of 33.9%.