China Leads in Patent Registration for Next-Gen Perovskite Solar Cells
China is taking the lead in patent registrations for the next generation of perovskite solar cells. According to Nikkei, annual statistics since 2020 consistently show that China is at the forefront globally in the number of patents for high-efficiency, flexible perovskite solar cells.
In 2021, China registered 70 patents, an impressive figure when compared to other countries. For instance, South Korea had only 39 granted patents, and Japan, traditionally a leader in total patents in this field for the past 20 years, added only 19 new patents in the same year.
Moreover, China also has an advantage in the number of scientific publications related to perovskite. According to Nikkei’s assessment, if the current trend continues, China will quickly establish dominance in the field of innovative solar technology applications.
Perovskite solar panels help optimize the installation area of solar energy systems and have lower production costs compared to traditional silicon. Despite China making significant strides in research, it has not yet surpassed Japan in terms of production capabilities. Japan currently owns three of the top 10 companies in perovskite solar panels, with products like Panasonic’s highly regarded for their photovoltaic conversion efficiency and the ability to integrate directly into house windows.
Japanese companies like Sekisui Chemical are also developing materials to protect solar panels from environmental impacts, with plans for commercialization expected next year. Meanwhile, China dominates the photovoltaic market, accounting for 80% of global production and significantly influencing the supply chain, producing 85% of solar components and 88% of polysilicon. The world is transitioning from fossil fuels to renewable energy, and China plays a crucial role in this trend.
Perovskite Overview
Perovskite is a type of crystal structure with the general chemical formula ABX₃, where elements A and B are usually metals, and X is typically a halogen atom such as chlorine, bromine, or iodine. The perovskite crystal structure is described by the ABX₃ structure, with the B+ ion relatively large at the center of the cube corners with the X- ions.
Perovskite materials are particularly of interest in the fields of solar energy, electronics, and optics due to their special properties, including:
- Solar Energy: Perovskite has become a potential material in developing high-efficiency solar photovoltaic cells. They have the ability to efficiently convert sunlight into electrical energy, and their production costs are lower compared to many other materials.
- Optics: Perovskite has luminescent properties, and applications in LED lights and lasers have been studied. The flexibility and tunability of the perovskite structure make them promising candidates in various optical applications.
- Electronics: Perovskite also finds applications in the field of electronics, such as the development of transistors and flexible electronic devices.
While perovskite holds great potential, it faces challenges such as stability and sustainability under real environmental conditions. Research on perovskite is ongoing to improve their stability and performance for practical applications.
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