The development trend of crystalline silicon solar cells

From the discussion of the above aspects, it can be seen that as the materials of solar cells, III-V compounds and CIS are prepared from rare elements, although the conversion efficiency of solar cells made of them is very high, but from the perspective of materials, this kind of solar cells cannot occupy a dominant position in the future. The problems of the other two types of battery nanocrystalline solar cells and polymer modified electrode solar cells, their research has just started, the technology is not very mature, and the conversion efficiency is still relatively low, these two types of batteries are still in the exploration stage, and it is impossible to replace the solar cells in a short time. Therefore, from the perspective of conversion efficiency and materials, the focus of future development is still silicon solar cells, especially polycrystalline silicon and amorphous silicon thin-film cells.

Due to the high conversion efficiency and relatively low cost of polycrystalline silicon and amorphous silicon thin-film cells, they will eventually replace monocrystalline silicon cells as the dominant products in the market.

Improving conversion efficiency and reducing cost are the two main factors considered in the preparation of solar cells, and it is difficult to further improve the conversion efficiency for silicon solar cells. Therefore, in addition to continuing to develop new battery materials, future research should focus on how to reduce costs, and existing high-efficiency solar cells are made on high-quality silicon wafers, which is the most expensive part of manufacturing silicon solar cells. Therefore, it is particularly important to reduce the cost of the substrate while ensuring that the conversion efficiency is still high.

It is also a problem that needs to be solved urgently in the future development of solar cells. Some technologies have been used in foreign countries to make silicon strips as the substrate of polycrystalline silicon thin-film solar cells to achieve the purpose of reducing costs, and the effect is still relatively ideal.

In 2018, China's output of silicon materials, silicon wafers, cells and modules accounted for % of the world's total output, respectively, making it the world's largest photovoltaic producer, and a number of excellent photovoltaic manufacturing companies such as Jiangsu Zhongneng, LONGi and Trina Solar were born. China's photovoltaic industry is still in the growth period, and there is a lot of room for future development.

The development and status quo of silicon-based solar leakage batteries are increasing year by year. The annual growth rate of monocrystalline silicon solar cell production is 1-3 times, and the proportion of monocrystalline silicon solar cell industry in global output has also increased from 2002 to nearly 15% in 2008. The efficiency of commercial monocrystalline silicon solar cells is increased from 13%-14% to 16%-17%.

Crystalline silicon solar cells are one of the most widely used solar cells at present, with the advantages of high efficiency, long life and good stability. Its application prospects are very broad, including the following aspects:

1.Solar power generation: Crystalline silicon solar cells can directly convert solar energy into electrical energy, which can be used in Taiyu Shouyang power station, household photovoltaic power generation and other fields, which can realize the use of clean energy and reduce the dependence on traditional energy.

2.Wireless communication: Crystalline silicon solar cells can be used in the field of wireless communication to supply power to wireless devices, such as wireless routers, smart wearable devices, etc., which can achieve long-term stable operation of the equipment.

3.Space technology: Crystalline silicon solar cells can be applied to the field of space technology to provide power support for satellites, space stations, etc., and have broad application prospects.

4.New energy vehicles: Crystalline silicon solar cells can be applied to the field of new energy vehicles to provide auxiliary power for vehicles, such as charging electric vehicles, etc., which can improve the range and service life of vehicles.

5.Environmental monitoring: Crystalline silicon solar cells can also be used in the field of environmental monitoring to provide power support for environmental monitoring equipment, such as air quality monitoring, water quality monitoring, etc., which can achieve long-term stable operation of environmental monitoring equipment.

To sum up, crystalline silicon solar cells have broad application prospects, and can achieve the goals of clean energy utilization and energy conservation and emission reduction in many fields.

Pro, monocrystalline silicon solar cells are one of the most mainstream solar cells at present<> and its development status is as follows: <>

Domestic development status: <>

1.Technology: China's monocrystalline silicon solar cell technology is basically in line with the international level, and <> already has strong competitiveness<>

2.Capacity: China is the world's largest producer of monocrystalline silicon solar cells, accounting for about 60% of the global market share <><>

3.Cost: The cost of monocrystalline silicon solar cells in China is at a low level in the world, <>

It already has a strong advantage Harbin <>

Current status of foreign development: <>

1.Technology: The monocrystalline silicon solar cell technology in developed countries such as Europe and the United States is relatively mature, and <> has begun to move towards high efficiency and <>

The direction of low-cost development <>

2.Production capacity: The production capacity of foreign monocrystalline silicon solar cells is generally not as good as that of China, but <> it still has a great <>advantage in the high-end filial piety market

3.Market: The market demand in places such as Europe and the United States is large, <> but with the rise of developing markets such as China, <>

The foreign market share is gradually decreasing, so the development prospects of monocrystalline silicon solar cells in the world are good<>

In the future, Harbin <> will continue to develop in the direction of high efficiency and low cost

Monocrystalline silicon solar cells are the most commonly used type of solar cells, and they have been widely used due to their high conversion efficiency, long life and stable performance. At present, the solar cell market at home and abroad is developing rapidly, and monocrystalline silicon solar cells occupy a large proportion of them. In China, the production technology of monocrystalline silicon solar cells has been quite mature, and China has become one of the world's most important producers of integrated circuits and solar cells.

The monocrystalline silicon solar cells produced by domestic enterprises have gradually caught up with and surpassed the products of foreign companies in terms of performance. At present, the market share of domestic enterprises is also increasing year by year. In foreign countries, Europe and the United States are also producers of monocrystalline silicon solar cells, but in recent years, due to the high domestic technology and the reduction of production costs, the market loss share of foreign companies is also declining year by year.

However, international scientific and technological cooperation and exchanges are still continuing, and the technology and market of monocrystalline silicon solar cells will continue to develop and expand in the future.

Organic solar cells have more advantages, in the human use of solar energy technology, solar cells, that is, the use of "photovoltaic effect" to directly convert light energy into electrical energy devices, is currently widely used, but also one of the most promising technologies. For a long time, people have been preparing solar cells based on inorganic materials such as crystalline silicon. However, this kind of battery production has the disadvantages of complex process, high cost, high energy consumption and heavy pollution.

Whether a new type of organic material with low cost, high efficiency, strong flexibility and environmental friendliness can be found to develop a new type of solar cell is now becoming an absolute goal that scientists around the world are striving for. "It is of great significance to use the most abundant carbon materials on the earth as the basic raw materials to obtain high-efficiency and low-cost green energy through technical means to solve the major energy problems faced by mankind. Chen Yongsheng introduced that the research on organic electronics and organic (polymer) functional materials started in the 70s of the 20th century provides an opportunity for the realization of this goal.

Compared with the inorganic semiconductor materials represented by silicon, the organic cherry sliding semi-conductive ridge macrowax has many advantages such as low cost, material diversity, adjustable function, and flexible printing preparation. At present, organic light-emitting diode (OLED)-based displays have been commercialized and widely used in mobile phone and TV displays. Organic solar cells based on organic polymer materials as photosensitive active layers have the advantages of material structure diversity, large-area and low-cost printing and preparation, flexibility, translucency and even full transparency, and have many excellent characteristics that inorganic solar cell technology does not have.

In addition to being a normal power generation device, it also has great application potential in other fields such as energy-saving building integration and wearable devices, which has aroused great interest from academia and industry. "Especially in recent years, the research of organic solar cells has developed by leaps and bounds, and the photoelectric conversion efficiency has been constantly refreshed. At present, the scientific community generally believes that organic solar cells have reached the 'dawn' of commercialization.

Chen Yongsheng said.