Ultrasonic Spraying of Perovskite Solar Cell Coatings

Ultrasonic Spraying of Perovskite Solar Cell Coatings – Cheersonic

Under the urgent need for global energy transition, solar energy as a clean and renewable energy source has attracted much attention. As a representative of third-generation solar cells, perovskite solar cells have become a “dazzling new star” in the field of new energy due to their unique structure and performance. It utilizes perovskite type organic metal halide semiconductors as light absorbing materials. Compared with traditional crystalline silicon solar cells, it not only has higher photoelectric conversion efficiency and significantly reduced production costs, but also has the characteristics of softness and good transparency. It has shown broad application prospects in fields such as photovoltaic building integration and wearable electronic devices.

Despite the significant advantages of perovskite solar cells, they still face many challenges in practical applications. Among them, poor material stability and defects in the thin film preparation process have become key factors restricting its development. Perovskite materials are extremely sensitive to environmental factors such as water and oxygen, and are prone to degradation, leading to a decrease in battery performance. However, traditional thin film preparation methods, such as spin coating, are difficult to achieve large-area uniform film formation and have low solution utilization, which cannot meet the needs of large-scale industrial production.

Faced with these challenges, ultrasonic spraying technology has brought new solutions for the development of perovskite solar cells. This technology is based on the principle of high-frequency ultrasonic vibration, which atomizes the solution into tiny droplets at the micrometer or even nanometer level. Then, through precise control, these droplets are uniformly deposited on the substrate surface to form high-quality thin films.

In the preparation process of perovskite solar cells, the application of ultrasonic spraying technology runs through multiple key links. In the preparation of the absorbing layer, ultrasonic spraying can accurately control the spraying amount and speed of the perovskite precursor solution, allowing the precursor to evenly spread on the substrate and form a dense and well crystallized perovskite film. This high-quality absorbing layer can effectively improve the light absorption efficiency, reduce the recombination of photo generated carriers, and thus enhance the photoelectric conversion efficiency of the battery.

Ultrasonic spraying technology also plays an important role in the preparation of electron transport layers and hole transport layers. It can achieve ultra-thin and uniform thin film preparation, ensuring that electrons and holes can move quickly and efficiently during transport, reducing interface resistance. Meanwhile, due to the uniform atomization of the solution by ultrasonic spraying, the formed film has good consistency, effectively avoiding the problem of local performance differences caused by uneven film thickness.

The advantages of ultrasonic spraying technology in perovskite solar cells are very prominent. Firstly, it has a high degree of controllability. By adjusting parameters such as ultrasonic frequency, spraying time, and solution concentration, the thickness, morphology, and composition of the film can be precisely controlled to meet the performance requirements of different application scenarios for batteries. Secondly, the solution utilization rate of this technology is high. Compared with traditional spin coating methods, ultrasonic spraying can fully atomize and deposit the solution on the substrate, greatly reducing material waste and lowering production costs. In addition, ultrasonic spraying technology has good scalability and can adapt to substrates of different sizes and shapes, providing strong support for the large-scale preparation and flexible development of perovskite solar cells.
From the practical application effect, the perovskite solar cells prepared by ultrasonic spraying technology have significantly improved stability and performance. In outdoor testing, these batteries are able to maintain good working conditions under complex climate conditions, effectively resist water and oxygen erosion, and extend their service life. At the same time, its photoelectric conversion efficiency has also reached the leading level in the industry, laying a solid foundation for large-scale promotion and application.

With the continuous innovation and improvement of technology, ultrasonic spraying technology will play a greater role in the field of perovskite solar cells. It is not only expected to solve the technical difficulties faced by current perovskite solar cells, but also promote the upgrading of the entire solar cell industry, accelerate the popularization of clean energy, and contribute to building a sustainable energy future.

About Cheersonic

Cheersonic is the leading developer and manufacturer of ultrasonic coating systems for applying precise, thin film coatings to protect, strengthen or smooth surfaces on parts and components for the microelectronics/electronics, alternative energy, medical and industrial markets, including specialized glass applications in construction and automotive.

Our coating solutions are environmentally-friendly, efficient and highly reliable, and enable dramatic reductions in overspray, savings in raw material, water and energy usage and provide improved process repeatability, transfer efficiency, high uniformity and reduced emissions.

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