Look at the forefront of view
Recently, and Jiangsu University of Science and Technology,The cooperation between the University of Kotin University in Australia has successfully prepared a high flexible, high -power weight ratio of crystalline silicon heterolytic solar cells. Related research results were published in "Nature".
Crystal silicon solar cells are currently the mainstream technology of the photovoltaic industry, accounting for more than 95%of the market.It is a cost -based power generation choice based on cost -benefit, but in some special scenarios, such as floating photovoltaic photovoltaic, curved roofs, satellites, aerospaces, and drones, such as the sea surface, such as the weight or flexibility of the materials, the crystalsSilicon solar cells are difficult to apply. Therefore, researchers have been trying to find methods, such as minimizing the thickness of the silicon wafer to increase the flexibility of the battery and reduce weight.
In this research, the three-party team has developed a series of new processes, including the surface interface , doped contactGrowth, etc.They prepared 5 products with a thickness of 57 microns to 125 microns. The conversion efficiency of these products exceeded 26%, up to 26.81%. and these products are thinner than A4 paper.In particular, a 57-micron thick battery has a power ratio of 1.9 watts/gram, a curvature radius of 19 mm, and a power weight ratio of 2-3 times the existing products on the market. These data have also been certified by the German Hemolin Solar Research Institute.
The success of this research has brought new hope to the development of crystal silicon solar cells. This highly flexible, high -power weight ratio of crystal silicon heterolytic solar cells can not only meet the requirements of special scenes for material weight and flexibility, but also expected to achieve higher efficiency and more in the field of ordinary photovoltaic power generation fieldsWide application.With the further development and commercialization of this technology, I believe that crystalline silicon solar cells will usher in new development opportunities and make greater contributions to the development of clean energy.
(Picture Source: Photo Network)
Technical value observation
The solar cell industry chain generally includes upstream raw materials, such as silicon tablets, silver paste, pure alkali, quartz sand, etc., and processing raw materialsHeal silicon wafers are divided into two parts: photovoltaic panels and photovoltaic components; downstream are solar cells, photovoltaic applications, including the integration and operation of power station systems. At present, the industrial chain of Chinas solar industry is relatively complete and the market demand is large.
Scientists have prepared high flexible, high -power weight ratio crystal silicon heterolytic solar cells, From the perspective of the solar battery industry chain, the technology is in the technology chain.The midstream link of the industrial chain.
Macro market observation
Solar battery production
From the perspective of the number of solar cell production in my country, the production of solar battery production in my country has been rapidly growing since 2015, which has continued to grow, maintaining continuously, and maintained it. The higher industry growth rate, affected by the epidemic in 2020, the industrys output growth rate is only a slight decrease of in 2019. From January to November 2021, my countrys solar battery production has reached 2.1135 million kilowatts, which has exceeded 2020 in 2020 Data throughout the year.
Chinas solar cell industry market concentration
From the perspective of industry concentration, the industrial concentration of my countrys photovoltaic battery industry has increased rapidly in 2020, which indicates that the industrys maturity is constantly increasing.The concentrations of the industry CR3 and CR5 in 2019 were 26.99%and 40.20%, respectively. By 2020, the industry CR3 and CR5 concentration rose to 43.19%and 63.46%, and the industry concentration increased significantly.
N-type battery is one of the direction of development
In 2020, large -scale P -type single -crystal batteries all use PERC technology, with an average conversion efficiency of 22.8%, an increase of 0.5 percentage points from 2019; the conversion efficiency of polycrystalline black silicon batteries using PERC technology reaches 20.8%, Increased by 0.3 percentage points compared to 2019; conventional polycrystalline black silicon batteries are not strong in efficiency. The conversion efficiency in 2020 is about 19.4%, only 0.1 percentage points, and the future efficiency is limited;The efficiency is 22.3%, which is 0.5 percentage points lower than the single crystal PERC battery; the average conversion efficiency of the TOPCON battery has reached 23.5%, and the average conversion efficiency of heterogeneous knot batteries reached 23.8%. Both were greatly improved from 2019. With the decrease in production costs and the improvement of yields in the future, the N -type battery will be one of the main development directions of battery technology.
Chinese solar cell technology circuit thermal map
According to the forward -looking industry thermal map, the current city clusters related to the strong technology of solar cells are mainly concentrated in East China, the Guangdong -Hong Kong -Macao Greater Bay Area, especially Jiangsu Province, which has become a key development area. These urban agglomerations have invested a lot of policies, funds, environment and talent resources for solar cell development, and become a potential solar cell technology development center.According to the distribution of thermal map, it is very likely to become a pilot area for solar cell technology.Focus on related companies in Yangzhou City, Jiangsu Province, Gao Post in Yangzhou City, Jiangsu Province, Yangzhou City, Jiangsu Province, Futian District, Shenzhen City, Guangdong Province, as well as the investment environment and potential market for the development of the solar cell industry.
Foreign Economist App Information Group
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