Flexible Solar Cells Breakthrough: Chinese University Achieves Record 23.4% Efficiency
In a groundbreaking achievement, scientists at China’s Westlake University have developed ultra-thin, flexible solar cells that can achieve a record 23.4 percent power conversion efficiency. This innovation holds immense potential for various industries, including architecture, automotive, aerospace, and wearable devices.
The Power of Tandem Solar Cells
Led by Wang Rui, the research team published their findings in Nature Photonics, highlighting the advantages of high-efficiency tandem solar cells. By combining perovskite and copper indium gallium selenide (CIGS) layers, these cells can capture a broader spectrum of sunlight, enabling the harvesting of more energy.
The Design and Development Process
The team’s design stacks two light-absorbing materials – perovskite and CIGS – like a “multi-layer cake.” Each layer captures specific wavelengths of sunlight, enabling the cell to harvest more energy than single-layer alternatives. The final product comprises as many as 15 layers, each with stringent requirements regarding thickness and uniformity.
Overcoming the Challenges of Perovskite Deposition
The development of the solar cells began in 2022, but the team faced a critical challenge: forming a smooth perovskite layer atop the CIGS surface. Initial attempts left the perovskite riddled with holes, crippling performance. However, researchers Tian Liuwen and Wang switched tactics, testing new perovskite deposition methods. After months of trials, they achieved a uniform layer – a milestone that propelled efficiency gains.
Breaking Down the Barriers
The team’s dedication led to the successful development of flexible solar cells with a record 23.4% power conversion efficiency. Consequently, this innovation is expected to transform the solar industry by enabling advancements in wearable devices, curved architecture, electric vehicles, and aerospace technology. Furthermore, it paves the way for exciting new applications in renewable energy solutions.
Industry Applications and Advantages
The flexible solar cells are expected to find applications in various fields, including architecture, automotive, aerospace, and wearable devices. Their lightweight nature reduces transportation and installation costs compared to conventional panels, making them an attractive option for diverse industries.
The breakthrough in flexible solar cells represents a major step forward in advancing next-generation solar technology. These innovative cells, known for their impressive power conversion efficiency and adaptability, could transform how we utilize renewable energy. Meanwhile, as China strengthens its influence in this sector, researchers are likely to achieve further progress in high-efficiency tandem solar cells and explore new practical applications.
In summary, achieving a record 23.4% power conversion efficiency in flexible solar cells is an extraordinary accomplishment with vast industrial potential. As the global transition to renewable energy accelerates, such innovations will be instrumental in driving a more sustainable future.
Source: China Daily & Photo/westlake.edu.cn