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Recently, researchers at the Princeton School of Engineering in the United States have recently developed the first perovskite solar cell with a commercially viable service life, which is an important milestone in emerging renewable energy technologies. The team expects the device to have a service life of about 30 years, far exceeding the 20 years common for current solar cells .
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perovskite solar cell is a solar cell that uses perovskite-type organic metal halide semiconductors as light-absorbing materials. It belongs to the third generation solar cell of . The perovskite battery has a simple structure. Taking the inverted planar perovskite battery as an example, from bottom to top it is: glass, transparent electrode (FTO or ITO), electron transport layer, perovskite layer, hole transport layer, metal electrode . At present, the world's highest photoelectric conversion efficiency record for perovskite solar cells has reached 25.2%, and the efficiency of perovskite and crystalline silicon stacked cells has reached 29.15%.
The conversion efficiency of perovskite cells continues to break through
In recent years, the world's top scientific research institutions and large multinational companies, such as Oxford University , Swiss Federal Institute of Technology in Lausanne, Japan Panasonic , Sharp , Toshiba , etc. have invested heavily. Manpower and material resources are being used to strive to achieve mass production as soon as possible.
Many universities and scientific research institutions around the world are conducting research on perovskite cells
In February 2017, Fiber Nano Optoelectronics broke the world efficiency record of perovskite small components previously held by Japan for the first time with a conversion efficiency of 15.2%. Since then, in May and December of that year, it achieved world-record-breaking results three times a year with conversion efficiencies of 16% and 17.4%. This time, they increased the conversion efficiency of perovskite small components to 17.9%, and the steady-state output efficiency reached 17.3%.
In 2022, Professor Tan Hairen’s research group at the School of Modern Engineering and Applied Science at Nanjing University and scholars from the University of Oxford in the UK used coating printing, vacuum deposition and other technologies to achieve the first large-area all-perovskite laminated photovoltaic module in the world. preparation, opening up a new path for mass production and commercialization of large-area perovskite stacked cells. Certified by an internationally authoritative third-party testing agency, the module's stable photoelectric conversion efficiency is as high as 21.7%, which is the world's highest efficiency among known perovskite photovoltaic modules. This achievement was included in the latest issue of "Solar Cell World Record Table", and the relevant results were recently published in the international authoritative academic journal "Science".
Previously, the "14th Five-Year Plan for Science and Technology Innovation in the Energy Field" released by the National Energy Administration proposed to promote high-efficiency perovskite battery preparation and industrial production technology, and develop perovskite battery based on solution methods and physical methods. Production process equipment, research and development of large-area, high-efficiency, high-stability, environmentally-friendly perovskite batteries, and research on high-efficiency stacked battery preparation and industrial production technology. According to industry insiders, the commercialization of perovskites is still in its infancy, but many industrial capitals have already entered the market. Statistics show that 2GW of perovskite cell production capacity is expected to be mass-produced in 2022.
