New Breakthrough in Solar Cell Preparation Technology
Perovskite tandem cell technology breakthrough: innovative application of ultrasonic spraying
Against the backdrop of surging global demand for clean energy, photovoltaic technology is undergoing a revolutionary change. Perovskite tandem cells have become the core breakthrough of the next generation of photovoltaic technology with their dual advantages of high efficiency and low cost. Flexible CIGS tandem cells, due to their lightweight, high efficiency and radiation resistance, have shown great potential in areas sensitive to space and weight, such as drones, wearable devices, and space satellites. Among them, CIGS thin-film cells, as the “bottom layer” of the tandem structure, have laid a unique advantage for the development of flexible solar devices.
To further improve the performance of perovskite tandem cells, the research team continues to explore innovative technical paths. An innovative anti-solvent seed layer strategy has emerged, which achieves synergistic optimization of interface and structure by cleverly decoupling the dissolution and adsorption process of SAMs (self-assembled monolayers). At the same time, pre-mixing perovskite seeds into the anti-solvent effectively improves the wetting behavior of the precursor solution, greatly improves the quality of thin film crystallization, and ultimately promotes the stable combination of perovskite top cells and CIGS bottom cells. This strategy significantly enhances the preparation consistency, operational stability and mechanical reliability of stacked devices, and provides key technical support for the industrial development of flexible perovskite/CIGS stacked cells.
In the preparation process of perovskite stacked cells, the uniformity and film quality of the film play a decisive role in the performance of the cell. When facing the preparation of high-precision and complex structure films, traditional spraying methods often have problems such as uneven coating thickness and material waste. The emergence of ultrasonic spraying technology has brought a new solution to the preparation of perovskite stacked cells.
Ultrasonic spraying technology uses high-frequency vibration to atomize liquid precursors into extremely fine and uniform particles. These particles can be accurately deposited on the surface of the battery substrate under the impetus of airflow. In the production process of perovskite stacked cells, ultrasonic spraying technology has significant advantages. First, it can achieve precise control of film thickness, and the error can be controlled within a very small range, ensuring that the thickness of the perovskite layer and the CIGS layer is uniform, thereby improving the photoelectric conversion efficiency of the battery. Secondly, the film formed by this technology has excellent uniformity. Whether it is a large-area battery substrate or a complex-shaped electrode structure, it can achieve dead-angle and defect-free coating coverage, effectively reducing the battery performance attenuation caused by uneven film.
In addition, the high atomization efficiency of ultrasonic spraying technology greatly reduces material waste, and the precursor solution can be fully utilized, which reduces production costs while reducing the impact on the environment. Moreover, the technology is easy to operate and can be seamlessly connected with the existing battery preparation production line, making it easy to achieve large-scale industrial production. The perovskite stacked battery prepared by ultrasonic spraying technology also performs well in stability, can effectively resist the impact of environmental factors on battery performance, and extend the battery life.
With the continuous advancement of technology, ultrasonic spraying technology is expected to play a greater role in the field of perovskite stacked batteries. It can not only help improve the photoelectric conversion efficiency of the battery, but also promote the application of flexible perovskite/CIGS tandem batteries in more fields, injecting new vitality into the development of global clean energy. From laboratory research and development to industrial promotion, ultrasonic spraying technology is becoming the key force for the breakthrough of perovskite tandem battery technology with its unique advantages, leading the photovoltaic industry to a new height.
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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