Perovskite solar cells are solar cells that use perovskite type organic metal halide semiconductors as light absorbing materials. They belong to the third generation of solar cells and are also known as new concept solar cells.
The development of solar energy technology has roughly gone through three stages: the first generation of solar cells mainly refers to monocrystalline silicon and polycrystalline silicon solar cells, whose photoelectric conversion efficiencies in the laboratory have reached 25% and 20.4%, respectively; The second-generation solar cells mainly include amorphous silicon thin film cells and polycrystalline silicon thin film cells. The third-generation solar cells mainly refer to some new concept cells with high conversion efficiency, such as dye-sensitized cells, quantum dot cells, and organic solar cells. The traditional production process of crystalline silicon solar energy is very complex, and some processes have very high processing temperature and energy consumption. But perovskite batteries are different, as long as there are five or six simple processes and the processing temperature does not exceed 150 degrees Celsius. Perovskite solar cells have been successfully selected and are known as the most promising next-generation photovoltaic technology.
The core equipment of perovskite cells includes coating equipment, laser equipment, laminating equipment, supplemented by cleaning, drying, and various automation equipment. Compared with the multi factory combination production structure of silicon materials, silicon wafers, battery factories, and components in crystalline silicon cells, perovskite cells can be assembled into a production line from one production line, achieving a reduction in production costs.
Coating equipment (PVD equipment), ultrasonic coating equipment, laser equipment, and packaging equipment are the four major equipment for preparing perovskite cells.
Advantages of Titanium Ore Batteries:
According to different technological routes, solar cells can be roughly divided into crystalline silicon cells, thin-film cells, perovskite cells, etc.
For various technological routes of photovoltaic cells, the level of conversion efficiency determines their future development potential. Compared to crystalline silicon, perovskite has three core advantages: excellent optoelectronic properties, abundant raw materials that are easy to synthesize, and a short production process.
According to the data, the theoretical limit efficiency of single crystal silicon cells is about 29%. From the actual situation, the current conversion efficiency of JinkoSolar's 182TOPCon cell is about 26.4%; The highest conversion efficiency of Longji Green Energy's P-type HJT battery and indium free HJT battery currently reaches 26.56% and 26.09%, respectively.
The theoretical single junction efficiency of calcium titanium photovoltaic cells can reach 31%; Perovskite stacked cells, including double junction silicon/perovskite, have a conversion efficiency of up to 35%, and perovskite triple junction cells have a theoretical efficiency of over 45%. Therefore, they are considered by the industry to have the potential to become the next generation mainstream photovoltaic technology.
Advantages of using ultrasonic coating equipment:
Ultrasonic coating is a solution deposition technique commonly used in the preparation of perovskite cells to create dense oxide layers and perovskite absorbing layers. Compared with other preparation techniques, ultrasonic coating technology has strong universality, low material waste rate, and excellent compatibility with various substrates, even irregular substrates. Therefore, it has great potential in the preparation of large-sized perovskite photovoltaic devices.
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1. High efficiency
Ultrasonic coating equipment uses high-frequency vibration to atomize perovskite solution into small droplets, which can achieve rapid and uniform deposition during the spraying process. Compared to traditional methods, ultrasonic coating equipment greatly improves the preparation efficiency of perovskite films.
2. High quality
The perovskite thin film prepared by ultrasonic coating has the advantages of good uniformity, high crystallinity, and few defects. In addition, ultrasonic coating equipment can accurately control spraying parameters such as spraying speed, spraying distance, spraying time, etc., thereby further optimizing the quality of perovskite films.
3. Large scale preparation
Ultrasonic coating equipment is suitable for the preparation of large-area perovskite thin films. By adjusting the parameters of the coating equipment and spraying strategy, large-area and high-efficiency preparation of perovskite thin films can be achieved, providing strong support for the application of perovskite materials in fields such as solar cells and optoelectronic devices.
4. Reduce costs
Compared to other methods for preparing perovskite thin films, ultrasonic coating equipment has the advantage of low cost. The ultrasonic coating preparation process does not require expensive equipment and materials, reducing the application cost of perovskite materials and promoting their widespread application in the field of new energy.
5. Green and environmentally friendly
Ultrasonic coating technology has the characteristics of environmental protection and safety. Compared with traditional coating methods, ultrasonic coating technology does not require the use of a large amount of organic solvents, reducing environmental pollution. At the same time, due to its non-contact coating method, it avoids the substrate damage and pollution problems that traditional coating methods may cause, and improves production safety.
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